Ali would definitely have gotten in Tysons head, Tyson would have been a tough fight I think, he is a bigger Joe Frazier / Norton hybrid in my opinion. Ali survived Foreman though... Tyson and Foreman were different fighters too- I think big George wrecks Tyson early, bad style match up for Iron Mike... Holmes in his prime puts Mike away too
Ali had it all, confidence,speed,granite chin,heart of a lion, size, great mind- he was truly a once in a life time fighter