The Su35 is a feasible counter measure to fight that USAF F22 Raptor but for long term the PLAAF still requires to import Russian Sukhoi T-50 fighter jet formation of a 'High-Low' Partnership of T-50/J20 as air to air superiority! Many Chinese netizens believes the J-20 can solves all kinds of problems when dealing with the USAF stealth fighters. That is naive and very dangerous, the J20 barely manage to be a stealth fighter of the 5th generation, when China adavance forward, the west does the same and their footstep even wider than China does! 

J20 is just too big like a F111, it is like driving a Cadillac car to chase a F-1 racingcar!  Thcanard design ws disastrous, it just expose itself counter stealthness!