i didn't state this was the ONLY reason why, but it definitely is a major factor. no doubt she's a talented individual to boot. In China though, the resources of coaching and time to play/practice we most likely provided to her by the government long before she had sponsorship, or before she even turned pro most likely. not like here in north america, our athletes have to struggle in comparison, in China, athletes are identified, then bred through government sports programs.
i could be way off base, i only know what i read and watch from the internet and our skewed capitalist television broadcasts. Perhaps JB or some of our eastern AZmembers can chime in.