They still do not have the advanced weapon systems we have, also one thing is to build a system and another thing is to use the system which we have. They do not even know if there system works.
There fighter planes and pilots also have no war experience at all. I would say that the Russians are better prepared and have been in many wars, they are in one right now. The Chinese have not been in a war for a long time, also remember what the Japanese did to them in WWII.
I just do not thing the Chinese are very good fighters.