Jim,
Problem was in that Yellow Gallardo. That car simply did not produce power and metrics that Lambo promissed in their official data. Next car(Grigio Proteus) was a lot better. Problem may be in Lambo engine quality control as Christian pointed out.
All in all this is pretty strange test. Natural winner here is 997 Turbo, not M6 IMHO. Z06 deserves second place also.
But, as I wrote before "higher politics" is here in charge apparently...