Hilariously we spent all that money on R&D and then the chinese hacked the pentagon to stole the designs and made their copy plane for the fraction of the price. It says alot about the military industrial complex.
We'll be at war with them soon enough so hopefully these will perform when the time comes.
Actual real live shooting war between China and USA is going to be a nuclear war so the performance of the planes in that scenario will be kinda useless.
China has ballistic missiles with the range to hit any location of their choosing on main land USA and the tech to fit nuclear war heads onto those missiles.
We'll be at war with them soon enough so hopefully these will perform when the time comes.