We all know what a supra is capable of so blaming the car would be retarded. The owner has no clue how to choose a correct setup for his goal let alone drive the car.
How many times have you heard someone say "all you gots to do to supraz to run 10'z is rEplayce dat turbo" without ever considering any supporting mods. This hat just happened to have the loot to do exactly that. Another retard with money.
Sell the car to someone that can handle it buddy.