Actually the 3000GT was a much more popular car then the 300zx, RX7, or Supra was. The 3000GT was the only car to survive and be sold here in the U.S till 99, it outsold the 300ZX, RX7, and Supra. The lack of VR4's and TT's not into the single digit 1/4mile times is due to it's AWD, tranny, and weight. (DSM's are a better dragrace platform)
But with that said, the VR4 is superior in other ways over it's rear drive jap competition, it's possible to drive it in any weather, it's AWD launch gives it a great holeshot, etc.
The 3000GT has it's strenghths and weaknesses just as any other car, I love it for what it is.