American football is 1 analogy. How about rugby union? I'd rather tackle or be tackled by a stocky fly half than Jonah Lomu in his prime. Football is a game. So are MAs fought in a ring. Don't mean to start another argument there, but these guys get a lot of time to size up their oppositions tactics and form a game plan. It's top level and tactics and coaching has a massive input. By no means am I saying the excellent shorter takedown artists aren't great, nor would I want to face them either in a ring or "on the street"! They're clever athletes and skilful martial artists. But if I had no idea of the skills of who I was facing, I'd take the (stocky or not) 5'2" guy over the 6'7", 150kg man of muscle every time. And I'd still kick his knee and punch his throat. Call me crazy.