You have to have some good suspension mods on your 350z to make this statement. And that would be apples to oranges comparison as the 370z is totally stock.
Full coils and aftermarket sways and lighter rims on your 350z should make it feel much more stable and controled than a bonestock 370z suspension. I cant see anyone driving both the 350z and 370z, both being stock, and coming away saying the 350z is better so yours has to be modded. If that is the case you should logically figure that into your experience before you decide the 370z isnt worth it based on your perception of its handling.
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