Take the young George Foreman who was a physical beast and give him the brain of the old George Foreman who was one of the smartest heavyweights you'll ever see and would suck up any amount of punishment and keep coming. He'd be champion for a long, long time. He'd have more or less everything you could ask for in a fighter.
tyson with the rocks stamina to go 12 hard rounds and never let up, not to say tysons was bad in his prime but the rocks was ungodly. to be able to fight like he did in the first half of the fight till the end of the 12th.