It's like comparing apples and oranges (no comparison). Each have pros and cons. The Supra that I had was like a beast on steroids and it had plenty of power and torque.....I couldn't launch it without loosing traction on 1st, 2nd & 3 gears. It would just keep pulling and pulling. The Supra is more of a straight line drag race car IMO. I would never take the Supra on a road course because of it's mass and hefty weight. It can easily break loose powering up coming out of a turn (which has happened to me on more than on occassion). Never the less the Supra is fun car to drive because of it's power & torque.
The NSX doesn't have quite the HP as a Supra would have, but the car is just so much more refined. I guess if you have a limited amount of $$$, you could probably make the NSX as powerful as a Supra. Handling wise the NSX will eat the Supra alive in that department, but then again I just think that these two cars totally different and each has its advantages and dissadvantages.