every country has their own unique situation or the rate of urbanization. one cannot compare apple to an orange.
Rapid urbanization such as China required a quick, mature ( creative is secondardy) design solution.For those who has experience working in China for sure understand the momentum.. so you either try to catch up or just not a good fit for you.
long hours sure does not help to come out with creative design but i am glad to expose to different type of projects types and sizes which i cannot get from working in US. ( unless you work for those Big LA firm)
i believe it is the choice for what each designer hope to accomplished in their professional career.