Yes he might possibly be other than Ali, I think he could beat the other great heavyweights in history. He did not achieve the 25 defences that Joe Louis did and he did have some lucky decisions (Carl Williams) and knock downs (Snipes) but at his best he had the greatest chin and left jabs in history.

Holmes v Lewis and Wlad would be interesting as Holmes would have to work out a way past their jabs and their sheer size.