I never thought of JMM is a light puncher..dude has 40 KO's
Exactly. It's always been his style that really held him back from KOing more dudes. Marquez hardly ever pressed for KO's back in the day. If they came it would be after a serious beat down or the perfect shot.
Same thing with Clottey. If he let his hands go more often he'd prolly ice a lot of dudes too. He was landing all types of dragon punches on Margarito until he hurt his wrists/hands.