China is an important market, because it grows at 6.5% annually while the american at 3.3% but you forget that the US market in 2011 was 28% of the world`s; while China was only 11% so the growth of the US market is proportionally growing as fast as the Chinese.
The document i gave you never said Asia is not growing in fact they expect from Asia more orders than from North America, however you forget that China is only of the most important markets and still you have africa, Latin america and middle east that take another Chunk of the world market.
To put it in simple words, If a manufacturer has good sales in Africa, middle east, Europe, North america, Latin america and some of Asia it can be one of the largest.
In fact that is what Embraer, Bombardier, Airbus or Boeing do however they do sell aircraft to China.
Is China important? yes it is, i did not deny it.
But that is far from what you pretend to say, China is a very important market, one of the largest in the world, true, a promising one, but not the only one niether the largest.
Can Y-20 give to China the tools to create an important economic asset? certainly yes it can, however it does not mean it is the end of Airbus, Boeing, Embraer or Bombardier, it only means that C919 or Y-20 give the place China deserves as a large country and market.
It only means China is creating a new player that will heat up the competition, but as i told you sooner or later China will need to do joint ventures, and certainly Y-20 or C919 are joint ventures since many of their sub-systems are not Chinese.