SACKS is the stat that catches everyone's eye and makes the highlight reel. But the far more important measure is how often does your pass rush disrupt the play? As in....hurry the QB, deflect the ball, make him scramble or get rid of the ball quicker than planned. Even hits/knock downs after the throw is delivered make a big additive impact. Picks and rushed/inaccurate throws result. Even the very best passing attacks can wilt under the effect of a relentless pass rush. I don't remember how many sacks Seattle had in the SB (I don't think it was an eye-popping number considering Denver had no choice but to throw). But I do clearly remember than Manning was under siege and quickly got "happy feet" back there. His accuracy fell off very quickly from what we are all used to seeing. Contrast that to the Bears week 2 game vs Minnesota (note: BEFORE the big injury parade got going). We had virtually no pass rush from our DL all game long. The result was Christian Ponder actually looked like a decent QB that game.