Korimyr the Rat said:
Except that two people with average stats, without the Brawl feat, are completely incapable of knocking each other out or even doing any kind of damage, even if they fight for hours. Add the Brawl feat, and every twentieth punch has a chance of forcing a saving throw. Also, prolonged hand-to-hand combat does not show any kind of a progressive effect, like would be seen in a boxing match or a real fistfight-- the fight continues until one opponent scores a knockout punch, which could be the first punch or the thousandth, depending on how the dice lay.
The massive damage rules in d20 Modern are a big improvement. The subdual damage system is an ugly wart on the face of an otherwise beautiful game.
Grapple and choke