Your examples says nothing about the rise (or decline) of the west. Only about how it is right now. That is missing the point. Those stats you mention seen over time show that the west is at best at a standstill while PRC have risen meteoric. The middle-class in PRC were pretty much nonexistent some decades ago in PRC. They did get the better standard of living and it is still becoming better. It doesn't go as fast as it once did but far better than the west.