USAF has Raptors
China's 400+ J-11s will blow right through the USAF's 184 (ish) F-22s before they know what's what. That's before you even start to take into consideration the J-20, J-31 etc. The same is true for Russia and its Su-27-series aircraft, plus PAK-FA.
The old 'quantity and a quality...' thingemebob.