I've driven both Supra's(89,91,94,97) and Skyline's(R32,R34)...A close friend of mine imports half cuts, so I get to have lots of fun.. Anyways, the 94 and 97 Supra's have a nasty feel when pushed hard, there's very little warning when the rear starts to slide, it's plainly just...Heavy, and it feels like it.. The older 89 and 91 I drove wasn't as bad, the 89 was down on power due to the 7MGTE it has but overall driving feel was actually quite respectable..The 91 is a different story, the owner swapped in the 2JZ and lots of work..So this car isn't a good comparison, very fast though...
Everybody remember, these are street cars...How much power do you need for the street? Let me rephrase that, how much power can you PUT DOWN on the street? Whatever number you have in your head, it's still not exceeding the limits of either motors. It comes down to your personaly choice, with styling and comfort...And I could care less about comfort, you want comfort get a BMW 760il or any highway cruiser...
Sorry for the rant, but I just wanted to share my experiences with these two automobiles... I gain nothing either way, I own a 89 Starion ESi-R..several actually.. Thanks for listening