I doubt Tyson would have done much in the 1970's....maybe the early 60's vs Liston and Co. but Foreman would have wrecked him, Ali would have toyed with him, and I think Tyson-Frazier is a toss up just because Mike is an early fighter and Joe poured it on late so it all depends on when someone got caught.

RON LYLE would have done well in a different era, tough fella, big punch, bad stamina though

EARNIE SHAVERS at 6'1 205 and hitting the way he did, I think the 1930's-1960's would have been PRIME time for him

Ray Mercer, had he been around when Tyson was in his prime he would have given him a run and probably beaten Mike.