I think Foreman was just too wild, and never really had to fight a good boxer/puncher in his early career. Frazier was an inside guy, Norton had a great jab but wasn't great defensively. Ron Lyle was solid but would never be confused with a ring general. And of course Foreman got KO'd by Ali.

It's a big difference in athleticism and sport science as well, Foreman was fighting guys 5'9''-6'3'', 199-220lbs. None of those guys could really compare to a 6'6'', 245lb super athlete with world class boxing skills like Wlad. It's apples and oranges.

If you really look at it, Wlad has fought fighters more comparable to Foreman than Foreman has fought comparable to Wlad.