The fact is that 'validating' the Ring lap times is meaningless. How can an independent validator with a stopwatch know if Porsche/Nissan/Corvette has a tweaked engine ECU, special brake pads, suspension tuning etc etc to shave a few seconds from the laptime? They can't, so this debate will always rage in one form or another...
I'm sure Nissan is delighted that Porsche put the GT-R back into the headlines when they stirred up the laptimes story again. It all served to highlight that the GT-R offers outrageous performance at the kind of price that might have car enthusiasts crossing Porsche 911 Turbo off their shopping list and replacing it with the GT-R.
There's a thought - GT-R is the perfect credit crunch car...