He lost to Chyna because its predetermined. Firstly you are saying he booked himself to win the World Titles in TNA and then you are talking about a kayfabe loss?
Kayfabe wise Jeff Jarrett has way more accomplishments than Bob Backlund and it doesn't matter if he booked himself to World titles or not. In the starting years of TNA before Sting,Kurt Angle etc Jeff Jarrett was the biggest name in TNA so him having the World Title was the right thing. Jeff Jarrett was THE guy in WCW and starting years of TNA Bob Backlund was not.
More accomplished? Are you just counting number of titles won and looking solely at that number as your argument?
Let me show you something:
Backlund had 41 sellouts at MSG during his reign as WWF champion. Now MSG for boxing can hold 20,789 in capacity but because wrestling has a larger setup lets say they can hold 20,000 fans in that building (and that's being EXTREMELY generous as WWF had no setup outside a ring when Bob was champ). So now lets do some math:
41 * 20,000 = 861,000 fans that came to watch Backlund at MSG and that's only including sellouts and counting 1 building that Backlund performed in.
Now Jarrett as the main event's BEST audience was 12,556 at Spring Stampede 2000 in The United Center. During Summerslam '94 one of the worst times of business in WWE drew 23,000 paying customers in that EXACT same building.
So Jarrett in 2000 (at a time wrestling was doing rock solid numbers in ratings and money wise) drew over 10,000 people less at a much more prosperous time in wrestling and most of that was because WCW was starting from scratch and the people who DID watch wanted to see where WCW was heading, not because of Jarrett).
Even at AAA champion in Mexico he headlined ONE big event, even as champion they didn't put him at the top of the card because he certainly wasn't the main draw for Triplemania XIX. So the only world title the guy ever won that WASN'T because of his dad, himself or Russo he wasn't even put at the top of the card, the only time that happened was the night he lost the title.
If all you are basing your argument on is titles then it's not a very good argument especially against the 2nd longest reigning WWF champion of all time not to mention Bob drew more in MSG than Jarrett did his entire career combined and at a time wrestling was regional not national.
Yeah I would say Bob's more accomplished.