Bret Hart was the least successful World Champion in history !!
According to Eric Bischoff anyway:
https://talksport.com/sport/wrestling/849340/eric-bischoff-bret-hart-least-successful-wwe-champion-history/
From a drawing perspective of putting fans in seats and selling pay-per-views, Hart didn’t have the greatest run and Bischoff says that makes Hart one of their least successful champions.share
“To this day, I do respect Bret, many aspects of Bret Hart as a performer,” Bischoff said. “Bret Hart in my opinion is one of the best technical performers in his generation, not the biggest star.
“His drawing power in WWE is well documented by anybody who wants to do the research in any objective way. He was not a main event draw in WWE.
“That’s it, that’s a fact. It’s not my fault, I wasn’t there, I didn’t book him, it just didn’t work. He was the champion, he was the face of the company, and he was the least successful World Heavyweight Champion, or at least one of them, in WWE history which is a long freakin’ history.
“Bret Hart is that guy that has to have something to hate in order to have something to talk about. If he has to do an interview, he has to find somebody to pick on, somebody to hate, somebody to blame.”