Andrej, then you are the camera men for that event!
Trip, no hard feelings from me. You are just little bit too much in love with 997 Turbo! That can fog your judgment little bit IMO.

Here are Hockenheim times achived by Sport Auto:
Audi RS4(Corsa's): 1.15,4min
BMW M6(Corsa's): 1.14,4min
Corvette Z06: 1.11,9min
Ferrari F430F1(Corsa's): 1.12,7min
Ford GT: 1,14,1min
Lamborghini Gallardo(Corsa's): 1.11,8min(old 500hp version)
Lamborghini Gallardo(Corsa's): 1.11,6min(new 520hp version)
Porsche 997 Carrera S(X51,-20mm/LSD,PCCB): 1.13,7min
Porsche 997 Turbo(Manual,PCCB): 1.13,7min
Porsche 997 GT3(PCCB, Michelin Cup's): 1.11,7min
Porsche CGT: 1.08,6min

Sport tires like Corsa's bring only about 0.5s around short track(2,6km) like Hockenheim Kleinkurs so, tires are not any advantage here but, chassis setup and traction.
Ring time 7.40min by Motor Trend?! Wishfull thinking or dreaming by Motor Trend stuff!