Lap Record depends on what kind of lap you're talking about - That being said a guy went faster than him a few years earlier:
http://www.youtube.com/watch?v=aqcEEonF0Uk
Ref http://en.wikipedia.org/wiki/List_of_N%C3%BCrburgring_Nordschleife_lap_times#Motorcycles
Not sure if it makes a difference for the actual record, but if you look at the bike in the video the ZX10R was a complete stock road bike with headlights and everything...Was the GSXR 1000 a stock road bike also?