Just before she signed with WWF i had her doing 315 for 3-4 reps on her Bench press....455 for 10 on her squat.She only weighed 180 at the time too
Big John Studd bench pressed "700-lb" in a video on the official WWE website. I don't think I can access it anymore due to geographical restrictions, but it should still be there for Getbiggers in the USA.
As if we didn't need to think it was so unrealistic to see heavy juicers be so big and strong, they also had to use fake plates to put up fake numbers.
As for Mike Tyson, he fought just over/under 220-lb at probably just south of 5'11", so I could see him bench pressing 405-lb...but he was a trained boxer who mostly did calisthenics training. I don't think he incorporated much weight training into his training.
Given that he was most likely on steroids and has incredible KO power, I could see him bench press between 315- to 405-lb...but no evidence of such lifts have ever emerged online.
He's still the best fighter by the eye test, IMO.