Well know I can give an actual hands on review of both.
Quick Answer:
Winner=GP1
Short Story Why:
The accelration and brake controls behind the wheel (GP1) smoke the foot
pedals of the T2. Even though I'm very impressed with T2, I'm even more so
with GP1. I'm amazed at how well you can finely and quickly adjust
acceleration and braking with your hands. You can come up really heavy on a
car and with ease let off accel and break much much quicker than with the foot
pedals. Then get back on the acceleration. Really it's great to control and
wonderful to watch at how close you can now get to a car and not sweat. The
more control I get the more realistic NRL is to having gords of human players
on the track.
Both are great but I recommend the GP1.
Now some may swear by authenticity of pedals and a shifter, that I will not
argue.
Q.B.M.