If you mean Ali vs Tyson then Ali, In his prime his speed and reflexes are unmatched in the heavyweight division. Tyson would have a hard time landing flush and even if he could Ali has never been knocked out. Tyson would slow late in the fight and Ali would just start picking him off and get a late KO. And if you just mean who was greater again it's Ali, far better resume.
I give Tyson a decent shot. Tyson had good head movement and very fast hands. He also had KO power in either hand. In contrast to how dumb Foreman was in the rope-a-dope fiasco in Zaire, I also believe that Tyson was an intelligent boxer. In my opinion, one of the key factors would have been whether or not the referee would allow Ali to get away with holding around the neck, like he did in the second and third Frazier fights.
Also, note that Ali had real problems with punchers that had good movement, e.g., Frazier and Norton.
Muhammad Ali he fought George Foreman and he was like a Mike Tyson and won the fight dude
Ali
No contest Ali without doubt
Would have knocked him out
If both were in there prime who would be the better fighter?
