Yeah, it was kinda lame. The baddest bountyhunter in the Universe get owend. Badly too. It wasn't that Han just beat him in the fight because he was lucky. Oh, that's another thing too. Han is really lucky, so maybe he has something going for him.
Also, in the EU Boba reuintes the Mandalorians and becomes the new Mandalore.
Because those guys aren't clones, if they are clones they are most likely clones from other people and no longer as powerful as others. Boba also isn't a normal clone he is far more trained then most clones. He is a Mandelorian, Mandelorians are trained to fight. Han is not. Mandelorians in general would knock him out. Boba is a good Mandelorian Han is screwed.