Pretty much what we're finding here also. The softer set ups seem to work better on all types of surfaces. I started playing with ultra soft set ups about 3 years ago to much skepticsm. My poor driving skills concealed the superiority of the soft set ups. But the guys here are pretty savvy and soon caught on that the "old" guy is going a lot faster now, but his driving is just as bad as ever.
Had to be the car, cause it sure wasn't the driving.