That's what makes boxing great: you have that extra physical layer added into the mix.

Being a better boxer than a guy, in and of itself, doesn't mean jack shit. Can you maintain it for 10-15 rounds? Can you be a good boxer when you're tired and getting hit, or when one eye is swollen shut?

There's no sport that tests an athlete physically and mentally like fight sports. A guy like Rocky Marciano had a laughable reach for a HW (even by 'golden age' standards) and wasn't exactly a ring general, but when you have a guy with an unbreakable will, huge power and neverending stamina, you'll see a lot of superior skilled guys get broke physically and mentally.

When you have power like Foreman, it doesn't take a whole lot of punches to break someone physically and mentally.