The three-motor setup will completely negate the handling downsides of the porky S/X compared to their competition IMO. Whether they're willing to put a seriously nasty wheel/tire setup under them to help cope with the capability, well, I guess we'll see. Didn't see anything about the brakes in this release either, but I'm sure Tesla thinks that's for future you to worry about, present you wants to smash the long pedal heh. I'm not really sure how well a car needs to handle when as long as the wheel is pointed straight the accelerator is basically a teleportation device, but brakes are gonna be important no matter what
I do wonder, though, how much control authority the torque vectoring will really have with the two motors on the rear axle. NSX uses two up front to get the nose in effectively, and it weighs a lot less. - S is going to need a lot more help in that department, especially arriving at the corner as quickly as it will be arriving, some 10-20mph faster at the end of any given straightaway...
But, maybe yuo can get most of that benefit out of dragging the inside front brakes from turn-in to mid-corner the way a lot of Track Day Hero stablity control systems (including Track Mode, sometimes) do. Which brings me back toooooo what about the front brakes? They're going to need their own water cooling circuit to do more than a lap or two (or a canyon or two) at full send.