The 370Z definitely accelerates faster than the NSX, though the top speed is much lower. That doesn't bother me.
I think the NSX looks are much more timeless and classic, but the 370Z looks much better than the 350Z and is very aggressive compared to the NSX, which I like.
The NSX is better engineered and may be a better driver (too soon for me to tell), but it's amenities are very 1991. I think I will enjoy a faster, more convenient and more gadgety vehicle that I won't feel I can't modify. And that I can afford to modify