It's a bit of a crude comparison but if an ancient mongoose could knock down rocky, wouldn't a taller stronger fresher lewis have an easier time?

I'm trying to think how Marciano could deliver power to the head of a guy who far taller than him consistantly and I'm riddled with a lot of "if he does this, then this then if this..etc" so I think if they were to fight 10 times Lewis would win the majority of them.