Sport Auto's official Ring lap results:
B7 S4 8:29
WRX STI 8:10
Evo IX 8:11
Just goes to show you how driver's balls can make a lot of difference. Very underrated car the B7 S4, very stealth too... but you can't beat physics and the lighter jap-crap will, in the hands of the same driver, pretty much beat it.
As a track tool out of the box, lighter on consumables and arguable better set up for session longevity in terms of brakes etc. than the Audi too.