The comments on this are very fascinating.
It seems most people in general want to take an optimistic view on China, and a pessimistic one on the US. In all reality, I think pessimism on both ends is the only thing warranted for the short-term future.
Everybody but a few thought that the USSR was going to out-do the US up until shortly before its collapse.
Most American critics don't seem to realize the consensus that most Americans are not lazy welfare sucking bottom feeding uneducated idiots. As was said in the comments on the article, Americans are known to be some of the hardest working and creative workers in the world. Recently, they were ranked 2nd most productive in the world, second only to I believe Belgium.
I certainly agree that if some things do not change within the US, that its days as the sole superpower could be over. However, a free-market system is what allows creativeness and innovation to thrive, and innovation produces the best kind of economic growth. My fear is that we are slowly but surely moving away from a true free-market system (not bailouts, hyper-leverage, etc, etc, etc). Fortunately, changes can be made to stop this, it is just going to take some serious effort from the American people.
The movement to bring the US back to a system that would allow for economic growth and elimination of the Federal Reserve is also slowly but most surely gaining steam. Right now, I think the best thing to do is promote a new type of governing in DC, and political activism by those who want the US to succeed.