Let me do some MMA math for y'all.
Bret Hart Has Defeated:
HHH (1)
Steve Austin (6 including tags)
Ric Flair (3 including tags, two were house shows/dark matches that were taped and released)
Randy Savage (2 including tags, but also in a title match on a Japan house show that was a big deal)
HBK (3 including tags, plus the original WWF ladder match that was eventually released on tape)
Bob Backlund (3 including tags, Backlund is officially 2nd greatest WWE champion of all time, only behind Bruno)
Kevin Nash (3 including tags)
Scott Hall (3 including tags)
The Undertaker (3 including tags)
Vader (3 including tags)
Goldberg (4 including tags)
Roddy Piper (3 including tags)
Booker T (1)
Sting (4 including tags)
DDP (3 including tags)
Chris Benoit (3)
The math puts him ahead of Hogan, as he's beaten HHH/Flair/Backlund/Taker/Goldberg/Piper/Sting, all who have beaten Hogan. The math puts him ahead of Cena, as he's beaten HHH/HBK/Taker/Booker/Benoit, all who have beaten Cena. The math puts him ahead of Rock, as he's beaten HHH/Austin/Taker/Goldberg/Booker/Benoit, all who have beaten Rock. The math puts him ahead of Brock, as he's beaten Goldberg and Taker, who both beat Brock.
The numbers don't lie.
And if you want to go deeper, he is head of basically every top Japanese heavyweight via his wins over Vader, Backlund, and Flair.
Truly the Excellence of Execution