he doesn't seem to get his hips into his punches (more of a shoulder punch), and his fist doesn't seem to be traveling at high velocity at the moment of impact. I could be wrong about both. Correct me if I'm wrong. But if these observations are correct, I'm looking for more explanation as to how he is easily knocking people down/out, because in my understanding, fist velocity at point of impact is a major influence on knockouts, in addition to state of acceleration(follow-through) and stiffness of fist/arm/body behind the punch. His punches probably possess the follow-through and stiffness, but I'm not so sure about velocity. Maybe it's also due to how he times it and where he hits too, not necessarily how powerful his punches are.