I'd expect them to be closer on the highway under light loads where the front motor is doing most of the work. Under city driving conditions, the Perfornce cars seem to bias a lot more oomph to the back than my Long Range, makes it feel like more of a rear-drive vehicle, but that also means a lot more heat losses from the big motor
Also keep in mind you're probably looking at 280 miles of "rated" range on a 30-50,000 mile Perfrormance from degradation at this point.
So, real-world, 80mph long raod trip freeway, maybe 250 100% to 0% (what I actually observe on mine, give or take) vs. 230 for the performance on the same tire? Only one way to find out!