GTlover - The gap is almost down to zero because Porsche was given substantial performance breaks. If it were not for the performance breaks (larger air restrictors, less weight, bigger front lip, etc.), the 997RSR would have been far behind the F458.

Hope must always be the last thing to die, but I must confess that I will be more than a little disappointed if the 991 RSR will have to rely on performance breaks in order to be competitive.