one punch knockouts can be viewed as lucky punches...to be beaten up for 12 rounds is way more devestating than that..because a fighter can always tell himself that it was a lucky punch..but when you whoop his ass for 12 rounds where he couldn't do shit it makes it clear that he doesn't belong in the ring with you..think about all the guys that roy dominated for 12 rounds...none of them asked for a rematched...lennox lewis came back and beat oliver mccall and rahman because he felt they both were lucky punches....