If his Ferrari didn't have fitment issues with the slicks, it would have been interesting to see how fast he could have gone. Regardless of drivetrain configuration, it is still a track record. I know someone with an SR3 which could give the record a real challenge, but they don't have the experience to get it there.
Although I prefer OTA to CSCS, this lap record battle is a great marketing tool! I will be at a couple of their TMP events again and I hope I get to witness the lap that tops the GTR.