I know Holyfield could be a punishing hitter, but he was not one of the dynamite punchers, and he had pretty much everything else. Lets say that every other parameter stays the same, but he has the power of a Joe Louis or Mike Tyson, which I think would have been physically possible. Can anybody in his era stand against him?
Granted it would likely change his style, but it would probably work. In this scenario we likely never hear about Ricckick Bowe or Michael Moorer. Perhaps he is even too much for Lewis.