Might as well answer one of these posts seriously:
I agree prime Tyson was about 21/22, I certainly don't think that he was the all time pinnacle of heavyweight boxing though.
I also think it's important to mention that simply because I think somebody would've lost to a prime Mike Tyson, that doesn't mean I think they in their prime were worse than the best version of Mike Tyson. 3 examples for me are Larry Holmes, Wlad Klitschko, and Tyson Fury. I think all of those guys would lose to a 22 year old Mike Tyson but I think overall all of them were better fighters in their prime, it's just that stylistically I think he'd be a nightmare for all of them.
The fighters I think would beat prime Mike Tyson: