F-22 is heavy fighter, the checkmate is a light fighter, its not supposed to compete with the F-22 its main competitor is the F-35, personally I believe the Checkmate is more of a success than the F-35, it costs less than half the F-35 and its development will go much more smoothly than the F-35 because unlike the F-35 this fighter will probably not try to become a VTOL fighter, a catapult launched fighter, and a regular variant this is one of the reasons that complicated the development of the F-35.Still no where close to 30 year old F22 design. BY the time it enters production US will be inducting 6th generation.
Not really, russian planes has problem with spare parts.
From what I know the problem is mostly in Mig 29, while Su 30 MKI dont have similar problem. I see Indonesian doesnt have much problem on their Su 30 but Russia is more stinky in term of giving TOT rather than USA so the overhaul and upgrade of Indonesian Su 30/27 were conducted in Belarusia.Not really, russian planes has problem with spare parts.