I don't put a whole lot of stock in comparative, "a>b, b>c" arguments. Each fight is different and styles make fights as we know. Foreman went 10 rounds with Levi Forte, who he couldn't put away. Levi Forte has been KO'd 16 times in his career, many of which were early round blowouts to much lesser punchers than Foreman, so I guess shit happens. The fact that Foreman did better against a guy than Tyson doesn't mean much IMO. Foreman also did better against Joe Frazier and Ken Norton than Ali did, and we know how Ali/Foreman went.

To me, Foreman was too slow to deal with Tyson. He could hold guys off, but I don't think he could to Tyson, and I don't think he could outjab Tyson or deal with him on the inside.