You beat me to making this thread Sally,
All signs point to Undertaker getting his win back. Which helps no one involved and likely leads to an even more unwanted rematch at Wrestlemania in Dallas. Yeah this match is a huge draw there is no disputing that, but if Undertaker wins, everything Brock has been built up to be over the last year and a half will be all for nothing. Ending the most coveted streak in the history of pro wrestling and being buit up as THE boss in WWE to defeat...only for the guy he beat in the first place to knock him off his throne.
It makes no sense and makes the last 15 months or so of Brock being unbeatable and no selling everything completely worthless if he is just going to up and lose to Undertaker. No one thinks any different of Undertaker. There is no shame in losing to Brock freaking Lesnar kayfabe or not. I always thought it was interesting that Brock was the one who "got away" so to speak for Taker and would have let it stay that way. In this day and age everyone beats everyone in wrestling sooner or later.
If Brock wins all is fine and dandy, but it doesn't do anything for him either. I mean beating the same guy who he sent to the hospital after their last match doesn't make Brock anymore terrifying than he already is. If Brock winning is the plan then I am game even though this match never needed to happen. Makes Undertaker look like a sore loser more than anything else. If Undertaker wins, I just am not sure what the point of the streak ending in the first place was.
Here's the thing....what exactly has Brock built up since he came back ?
He came acting like a spoiled brat and proclaiming himself an unbeatable bad A#$ but immediately lost to Cena....definitely got him over as a heel but hardly a scary unbeatable beast.
Then he barely survives three (admittedly excellent) matches against a semi retired HHH, clearly playing the villain, including a barely survived win at S-Slam and clean loss (albeit another close, competitive and entertaining match) at Mania - He is more established as a jerk heel but again hardly a frightening beast
Beating Taker at Mania was impressive....the win itself wasn't particularly dominant but ending "The Streak" carried some weight. Parlaying that into his only truly dominating "beast like" performance at S-Slam against Cena (winning the World Title) was impressive but it was the 1st time in two years he actually was booked to look like an unbeatable bad A$# and not just a jerk heel.
Then in his rematch Cena dominates him and he barely escapes with the belt, lucky he wasn't beaten outright - After that he barely survives a Triple Threat Match with Cena & Rollins, a more balanced match but not even close to dominant. At Mania he looks dominant in a short match until he is up ended, outsmarted, and loses to Rollins.
That loss might have earned him some sympathy from fans but over all for two years Lesnar has "ACTED" on the mic like a beast but mostly in the ring he's been more like a HHH or Flair-like villain, skilled but cowardly heel who needs luck and cheating to barely survive by a thread against virtually every threat, basically what Rollins is right now.
Lesnar, who flirted with a face turn after losing to Rollins, can easily go back to being a heel against Taker because so little has changed in his presentation between Mania & now. Likewise, Lesnar has consistently been billed as a tough but very beatable opponent, which doesn't change if Taker beats him as long as they let the match be competitive. Then Lesnar can take some time off, come back and beat a mid carder, and start a main event feud later on in time for the next Mania. Absolutely nothing changes for him, especially given his limited part time schedule, he can remain as the obnoxious heel who isn't nearly as tough as he acts and sell tickets to fans who want to see him get his butt kicked.
Taker is likely on his last major run, and if so WWE will certainly give him a nice exit and run to retirement like they did Flair & HBK, which would make fans happy and sell tickets in the meantime, a win over Lesnar at S-Slam would go a long way towards to kickstarting that. Also, Taker has never been a character to take a personal slight lightly and Lesnar not just beating him but basically humiliating him again & again over the loss is just the kind of thing his character would not be able to walk away from.