I'm sure the "tactile" improvements in pedal feel and modulation are there. The unsprung weight reduction is a great benefit to this kit as well.. eases the suspension's job!
Shaun, did you go for a different pad coumpound on the WIlwood brakes? That would account for a large part of the difference as well.. I know the pads that came with my Baer kit were great for the street, but wanted to fade at the track...