>Compare a US problem that caused global recession
Its an extreme oversimplification to say that 2008 was a US problem. It was a problem of international finance, the bulk of which (maybe unwisely) is done via US financial institutions and with US financial products. That a problem with international finance was linked to recessions globally is not surprising.
Similarly, if some systematic problem in international manufacturing appeared, the bulk of which (perhaps unwisely) is done in China, we would expect it to also have global ramifications.
It turns out that a financial problem in China is currently contained because it is not a major player in international finance (yet).
Or even better compare to china that might have to down grade its growth to "normal"...
I forgot what your point was...