the sports they own are the craftsmanship sports, where willpower, discipline and utter devotion might make yuo climb to the top. china still sucks at most sports that require any kind of creativity, where you need to think outside the box, where there's no "schedule" you just need to adhere to in order to win. sports with actual human beings, you know. chinabots are machines though.
Bingo. Also, aside from aberrations like Yao they seem to have a relatively small number of people that are athletically or physically elite considering their population.