just b.c a car has a better track time doesn't always mean its the better track car. I know that sounds stupid, but do you consider a panamera, m5, or a cts-v a track car? yes those are fast as shit cars, but not the most fun track cars in my mind.
I love lightweight cars. IMHO when tracking becomes important, weight is one of the most important factors.
Granted i don't think the 1M is the best car either (even at 33xx lbs) it's too heavy. IMHO sub-3000 lbs is the best starting point for a track car.