Chris, sorry just realised you had posted in this.
The Auto with the TC off, still reigns you in when on the limit, for road driving not a problem, its not a great idea to changing gears half way round a corner but when your going quick enough for one side of the car to be loaded and the corner isnt 'that' sharp you have to change gear to exit the corner at the maximum speed. The car changes gear and kills the power to the wheels until you take your foot off the accelerator, unwind the wheel (even slightly, like an inch) and then reapply, i would strong suggest the manual m8.
Same corner in the GTR, no worries, changes up, sorts out the torq to the wheels and you dont notice it
Same corner in the manual 370z, with some gentle throttle control, ie no stamping, it changes gear and carries on as if nothing happened
Same corner in my car, change gear, goes a little sideways, and then back to where you should be...
The auto box in the gtr is fantastic but the 370z auto didnt do it for me, pm me if you need anymore info m8.