The problem with saying that one wins over the other is a matter of goals though. I would much rather have a car that gains in mid range response and a comparable top end, than one with only top end sacrificing the midrange to get it. That is essencially what the Gen II head does. Now, if you're only objective is to see what kind of max dyno power you can get is, then yes, the Gen II will win. But, if you want to run down the track, especially a road course or auto-X, then a properly ported Gen III head will out perform a properly ported Gen II head. Real world racing and Dyno numbers are not always the same. Flow bench numbers can't show air velocity which is directly proportional to midrange power.