Decline of the US ??

For example, in the past six years the U.S. share of total global market capitalization has fallen from an average of 57% in 2003, to 49% currently, according to a report by Morgan Stanley. Much of this weight has swung to the BRIC countries, which now account for about 7.6% of world market cap. These countries are on an almost equal footing with the might of France and Germany combined.
http://seekingalpha.com/article/297518-why-emerging-markets-are-attractive-relative-to-developed-markets

On a roughly estimate BRIC comprised around 2-2.5billion people whereas France and Germany combined amount to around 130million people. That's a magnitude of little less than 20 times. Let's think about our comparisons; I understand the gist of the author's point but his first statement "In an increasingly globalized world, the dominance of the US over the global economy is declining." masks an increasingly complex picture.