911's just seem to do more for a given amount of power. I recall test driving a late 996 C2 that was maybe 4 years old back when the ZHP was my DD and I had the V70R and the 996 felt a whole lot faster. Far more than the numbers would indicate.
OT, but this video is pretty amazing even if the other drivers seem to suck a lot. Damn that GT2 RS is fast.