I think you contradicted yourself. So you want to say effective punch is only punches that hurts an opponent? As the previous poster says, some fighters are feather-fisted than others. A flush shot wont be as damaging as a flush shot of a puncher. Are we going to penalize someone because of that? I think you have to redefine effective punches. This are punches that lands clean, not blocked or rolled. Of course damage is one indicator, but not always. You don't have to hurt your opponent with every punch to score, it has a lot to do with accuracy of the punch. If a fighter consistently lands good, clean punches but fails to do much damage, and the heavy-handed guy sneaks in a harder but fewer shot, i'll award it to the effective agressor....the one with better accuracy in landing his shots.
I certanly didn't contradict myself, but effective punching is a more correct term than a damaging blow because even a punch that doesn't do much harm such as a good, consistent jab which keeps your opponent defensive and sets up punches is certainly an effective punch, if not all that damaging. And for the record, every single landed punch causes damage. Even a blocked punch because it still hurts.... and even a light puncher accumulates damage on their opponent either with volume or sometimes catching their opponent just right and hurting them. You just have to sit back and assess whether or not that light puncher accumulated enough punishment throughout the round to actually award him that round.
The only thing that confuses me with your score is that once you go down you automatically lose a point! If you were gonna score it 10-9 for PW with 4 seconds left in the round how is it that one punch and knock down gives a 2 point swing in Martinez favor(10-9 SM)?:huh I watched that fight/round many times and PW was the aggressor who threw more punches and connected more! SM hit PW 2 shots that round! If you wanna give the round even then in all fairness the 2 knock downs should cancel each other out making it an even round!!