If the World Heavyweight Championship didn't exist...
2002:
1. Brock Lesnar would've dropped the WWE Championship at Survivor Series 2002 to Shawn Michaels in the Elimination Chamber, not to Big Show in the dead dad feud.
2. Shawn Michaels would've dropped it to Triple H at Armageddon, and Triple H would've faced Brock at WrestleMania instead of Kurt Angle.
The net effect is Big Show, Kurt Angle and Triple H each lose a title reign.
2003:
1. Kurt and Brock still get their feud so Kurt wins the title at Vengeance, drops it back in the Iron Man on Smackdown. Just like IRL, the plan would be to build towards a big Goldberg vs. Brock WrestleMania main event for the title. But of course, Goldberg would give in his notice around December, and just like real life, they would need a back-up main event. Triple H beats Brock for the title at Armageddon so they can start building him as an opponent for someone else at Mania.
The net effect is 1 less reign for Triple H who held it for almost all of 2003 and none for Goldberg.
2004:
1. This comes down to WWE choosing between Eddie or Benoit to main event against Triple H at WM20. I think they stay the course, go with Benoit, and inject him into the HBK/HHH feud at Mania. Eddie sadly doesn't get the rub he deserved, but plenty of midcarders never did.
2. JBL will wear the US title during his rise on Smackdown which will be the main title going forward as Benoit stays feuding with Trips and others on Raw. Randy gets it at SummerSlam to break Brock's record and then drops it to Triple H who eventually vacates it so they can put it up in the Chamber at NYR.
The net effect is no reigns for JBL and Eddie, despite plenty of main events on Smackdown.
2005:
1. Now here's where I think things start to truly deviate from real life. Vince had already decided at this point that he wanted John Cena to be the new face of the company, but he also wanted Batista to be a top guy as well and wanted to build him up with that Mania main event. I'm guessing the WM21 main event goes on as planned, but someone beats Batista for the title during the summer so Cena can win it at SummerSlam. I think Triple H would be the one to do it, and they would build towards Batista vs. Cena at WM22.
The net effect in all of this is actually +1 reign for Triple H. It could be that they would go with some other transitional champ so Triple H can face Cena at Mania, but with him having jobbed to Brock, Benoit and Batista three years straight, I think they would take a break of putting him in the main event.
2006:
1. Batista gets injured right before he was supposed to win the Rumble for a 2nd time and WrestleMania plans go to shit. Edge had just beaten Cena for the title at NYR in a surprise cash-in and was supposed to lose it back at the Rumble for the big money match. What now? Well, with Eddie having passed away, I think WWE will go with the Rey push after all. Rey wins the Rumble, Edge stays champion and they add Orton or Angle, or both, to give it some star-power.
2. With RVD and the ECW angle happening in the summer, Rey needs to drop the title soon. They're not gonna have Cena destroy Rey after all that Eddie-momentum, so they have Rey drop it to Triple H who ends up being the one to put over RVD after interference from somebody, IDK who, possibly Vince or Spirit Squad or w/e, leading to the DX return for SNME and SummerSlam.
3. RVD gets suspended just as they were building to a big 3-way with Edge and Cena, so they end up doing the match on Raw, Edge wins, and Cena ends up getting the title back at Unforgiven to get back on top.
The net effect is 1 less reign for Angle, 1 less for Cena, 1 less for King Booker, 1 less for Batista and +1 for Triple H.
2007:
1. Batista would win the Rumble to finally get that money match with Cena, Shawn faces Rated RKO in 3-way or something, and Taker faces someone else. Maybe Benoit? Who knows.
2. Cena would go over and Batista would job at Mania just like real life. Cena would go on to continue his one year reign, all the way until he's injured. Now they need a plan for No Mercy. Well, here's the thing. Kennedy at this point still has his briefcase, and this becomes a good way to use it. He cashes in on the vacant title at No Mercy and they just give it to him. Triple H comes out, eggs him for a match, and Kennedy drops it back in the first 10 minutes of the show. Since Triple H was booked in a match with Umaga, and Orton was booked to face Cena for the title, Triple H then has to work both matches. He ends up beating Umaga and drops it to Orton.
The net effect is no new reigns for Taker, Khali or Batista, and no 2 new reigns for Edge. Add +1 reign to Kennedy who got that mini-reign instead of Orton! I debated whether or not Edge would have taken the briefcase off Kennedy anyway, but I don't think it was likely. The reason they did that was because Taker got injured and Kennedy was booked to cash in, but then Kennedy got injured, so they moved the cash in onto Edge. Without that booking, Kennedy's six week injury is inconsequential and he gets to keep the briefcase.
2008:
1. Cena comes back to win the Rumble, faces Orton at No Way Out, and they build to the big 3-way with Triple H at Mania. They'll find another way to do Taker/Edge and make it personal without the title.
2. Cena wins the title at Mania, because they weren't going to have Orton win clean in the actual main event. I don't know if Punk would still win MitB. He was given it so he can use it to get one of the titles back on Raw after they draft Triple H to Smackdown, but none of that is necessary here. I'd say Jericho wins the briefcase with the hope of cashing in for a heel turn on Cena or maybe even cashing in for the ECW title.
3. Cena drops the title to Triple H at some point so he can get back his wins for putting Cena over. Triple H moves to SD with the title because of the new network push, and Jeff Hardy starts his big feud with Jeff Hardy. Triple H drops it to Jericho instead of Edge at Survivor Series, and Jericho drops it to Jeff at Armageddon.
The net effect is two less reigns for Edge, 1 less for Jericho, 1 less for Batista, 1 less for Punk, and 1 less for Taker.
2009:
1. Edge beats Jeff at Mania for the title after the Matt Hardy turn, but he still drops it to Triple H in the Chamber. Nothing can stop The Political Assassin. He wants to main event Mania against Orton and he'll get it. Orton wins the Rumble, Triple H wins the Chamber, and we get the WM25 main event.
2. Jeff is way too over to not put the title on him at this point. Triple H drops the title to Edge at Backlash instead of Cena, and Edge gets to do the honors for Jeff at Judgment Day and One Night Stand. CM Punk's cash-in goes according to plan, and he gets to trade some title victories before retiring Jeff and then dropping the title to the Deadman for one final run.
3. This means Orton never got to have a reign of terror on Raw. Instead, he most likely would feud with Taker after he gets the title, but would never get the title.
The net effect is a lot. 3 less reigns for Cena, 3 less for Orton, 1 less for Batista, 1 less for Triple H, 1 less for Edge and 1 less for Sheamus. It's very likely that they might do the big "Edge loses one world title and wins the other" at No Way Out with the ECW title though. Maybe even build to an Edge vs. Christian match at Mania.
2010:
1. Edge might still come back for a face turn against Jericho, but no way it is for the title. With only 1 title scene in the company, Batista/Cena would have already been done a couple of times. Taker/Shawn is still main eventing, but Cena needs to be in the title picture. Either Cena wins the Rumble a 2nd time or they give the Rumble win to the ECW title contender. Either way, Cena gets a rematch with Batista who won the title in the Chamber after Shawn's interference.
2. Cena wins at Mania and Swagger loses his cash-in the next night to give some breathing room for the new MitB PPV. Cena retires Batista and soon begins a feud with Sheamus who injured Triple H. The Nexus happens, and they help Sheamus win at F4W. Orton is a face now, and he eventually gets the title. Miz then cashes in afterwards.
The net effect is none of the WHC title reigns. No Jericho, no Swagger, no Rey, no Kane and no Edge. 1 less for each of them.
2011:
1. Cena wins the Rumble for a whopping 3rd time, as he faces Miz at Mania. Barapadoo. The Rock/Cena WM28 main event is set up. Cena gets the title, the Summer of Punk happens, and Punk wins the title.
2. With all the SD guys eligible for the WWE title tournament, I doubt Rey wins. I'm thinking a heel would've won so Cena could give him his comeuppance when he takes the title later in the show. I can't say for certain who would get the rub here, but it could be Mark Henry, who is most likely not getting his title reign later in the year.
3. Punk comes back, beats Cena at Mania, the awful Nash stuff happens, Del Rio cashes in, Cena gets the title back, Triple H squashes Punk (smh) and Punk wins it back from Del Rio.
The net effect is two less for Christian who never gets to become World Champ, 2 less for Orton, 1 less for Big Show, 1 less for Dolph, 1 less for Rey, 1 less for Edge and 1 less for Bryan.
2012:
1. Punk faces Jericho in the mid-card which means Jericho certainly wins the Rumble. This time no Sheamus win thank God. Rock/Cena, Brock/Cena, Show/Cena, and Ace/Cena still main event though.
2. It's unrealistic to expect Punk to hold the title the whole year when there's only one, especially when they want to give Sheamus a Batista push as the face of Smackdown. I'm thinking Mr. Money in the Bank winner Dolph Ziggler beats Punk for the title, drops it to Sheamus, and then Sheamus drops it to a heel Punk so he can face Rock.
The net effect is 1 less reign for Big Show, 1 less for Del Rio and +1 for Dolph Ziggler. Cena didn't need to win MitB because they already did the "lost cash-in" angle with Swagger.
2013:
1. Cena beats Rock at WM29, and drops it to Daniel Bryan who is still most likely a sensation even without the 18-second loss at WM28. The Orton/Bryan catastrophic booking is probably left unchanged since nobody cared for the World title at this point.
The net effect is 1 less for Dolph, 1 less for Del Rio, and 1 less for Cena.
2014-2015:
1. The Batista return and Bryan replacement still happens. Punk probably still quits, even more pissed because he can't crack a main event with such a tight roster. Everything continues as it was today.
Anyway, overall, these are the biggest changes when it comes to title histories:
1. Edge is a 4-time World Champion instead of 11. 7 title wins never happened. Randy Orton is a 6-time World Champion instead of 12. 6 title wins never happened either. John Cena is a 10-time World Champion instead of 15. 5 of those never happened.
2. Batista is a 2-time World Champion instead of 6. Most of his big main event run would be second-fiddle to Cena.
3. The Great Khali, Goldberg, JBL, King Booker, Eddie Guerrero, Jack Swagger and Christian were never World Champions.
4. Triple H is a 12-time Champion instead of 13. Not that big a difference.
5. Kane, Big Show, Rey Mysterio, Alberto Del Rio and Dolph Ziggler only held the title once. Big Show had 3 stricken out, Angle, Del Rio and Rey had 2, and Dolph had one.
6. CM Punk and Daniel Bryan never got their "test runs" with their first MitB cash-ins. Same goes for Sheamus who didn't get that test run in Winter '10/'11.
7. Kurt Angle, Chris Jericho and The Undertaker all got 2 less reigns. Their collection of accolades are big enough that it doesn't make much of a dent.
8. Mark Henry never got his Hall of Pain reign, but he got a 2 hour reign before dropping it to Cena. Likewise, Kennedy got a 10 minute reign, but never got to a proper reign since he got suspended the next year, injured after that, and then fired after returning.