The FN2 looks like crap and performs like it too. The FD2 out performs it cough DBW rear susp. cough and looks better :)
And Tension, I think it's noticeably faster only because it has more data stored. However, it would come down to driver because while the GTI is slightly faster in the straights, I believe that the CTR will be better through the corners (braking, entry, speed, and exit) to make up for what is lost on the straights.