Tyson would have lost to Foreman -prime on prime,
Liston gives Mike a long night,
Ali puts him away,
Frazier gives Mike a long night too,
prime Holmes beats Mike,
put Marciano on a weights program and beef him up and it's a toss up fight,
prime Joe Louis beats Tyson
Tyson in the 70's era would have had some real problems, he's definitely great with Cus, but after that, he was not the same fighter, did not have Ali's or Marciano's or Fraziers heart, Tyson is tailor made for big George and Liston, Holmes too many skills across the board