From what I have seen at the Chinese Government airlines i.e Air China, China Southern, China Eastern is that you have about 20% of First Officers who could be considered genuine Pilots, who enjoy flying, work hard and are good enough to eventually become captains. The other 80% are there for the reasons previously mentioned, its a good salary and there is pressure from family to take the job. It seems to me that the Chinese government companies are quite happy to put thousands through Pilot training and accept that only a few will make Captains. The downside is though that some do make Captain who really are not good enough, maybe that happens everywhere but probably more so in China. The western Pilots on the other hand have a really tough run through training to become captain, despite significant amounts of previous experience.