Roy wasn't the hugest puncher, but his speed kinda was his power. When you don't see a shot coming it sparks you out even when it ain't that big a shot, when Roy hit them and they crumbled, it's because they didn't even see the shot. ROy was much less effective as a finisher when the guy was defensively sound. That's no disrespet to Roy because it's hard to be a big puncher when your so outragously quick, with such good movement, to be be able to stand still and really dig your feet into the canvas and unleash a KO punch.