The US doesn't produce J20s of course - just that you
stole everything about the J20 from them. Let's face it - everything you've produced of any worth in the past 60 years is stolen or copied. Left to your own devices, you'd be about as "developed" as Somalia. Don't get me wrong, I think China is full of talented and smart people - just that you have the most corrupt, bloodthirsty and plain retarded government in China's entire history, Communist goons and thugs who just want money and power and "face".
Sure we're behind China right now, but that gap has been created only in the past 30 years. I'm sure we'll catch up - no one is denying that you're ahead, so no need to foam at the mouth with superiority. It's a bit like how the two countries are at the Olympics - human slaves beaten into practice 24 hours a day since young vs a free people with poor facilities. Sure the former will have a head start, but the sustainability of CPC propaganda robot-creation is anyone's guess.
LOL why would we have inferiority complex towards you? We gave you philosophy, astronomy, kung fu - hell we even gave you our gods! For 2000 years India has been civilizing China, and I'm pretty sure these recent aberrations will be corrected in some time.