From the article:
"range of estimates, but generally the gross domestic product of China in the year 2004 is estimated to be substantially less than $2 trillion. That would roughly make it one-sixth the size of the United States economy. Yet China has nearly five times the population of the United States. That means the per capita G.D.P. of China is about one-thirtieth the per capita G.D.P. of the United States"
This is totally not meant as a cut against anyone, but it is always useful to keep relative positions in mind. While China's economy is growing very quickly, don't forget it has a long ways to go. As the author Ben Stein points out, it is something often forgotten in the media.