Musk has like 6 inches and 60lbs on Zuck
I can't find the video I wanted to. It was a breakdown of some big guy who didn't know how to fight go up against someone much smaller but knew some boxing. The little guy backs up, moving laterally away from the big guy's primary hand. After the big guy throws a punch and gets himself off balance, the little guy knocks him out with one good punch to the jaw. Lights out.