well i would pick mike to be champ at the end of that:
Foreman would beat Liston inside of 3
Tyson Would Beat Liston Inside of 3
Tyson and Foreman is close but i say Tyson KO3, people try to compare this to Foreman Fraizer, however i disagree, for one Foreman used pushing in the first, (not sure about the second) also at his best Tyson was fast enough to avoid bumbling Georges shots, over power him and win inside the distance. IMO Tyson hits just as hard or maybe harder than foreman.
Before people start saying that i am underrating Liston i am not, i belive like someothers that he is grossly underatted, however i do not believe he hit as hard as Foreman and Tyson and in this 3 fights it comes down to power and chin, and i believe that in this group of 3 Mike has the advantage.