And this is a guy some say would have walked thru Joe Louis?...Rocky Marciano?...Jack Dempsey?...Ali?
Rocky would have ko'd Lewis with first punch he landed similar to what Don Turner says he would have done to Wladimir Klitschko.
He would have had a rougher time, because Marciano would have been in it to win. This might have resulted in Marciano getting stopped of course.
I would say Tyson. Tua was a potential winner going into his fight on paper. This was his only shot at the lineal heavyweight title. Tyson was a mental wreck, and he was just there for a pay day, against the best fighter in the world. He still managed not to embarrass himself!