Such graphics are entertaining for some people, but awfully pointless.
To compare economic 'power' by using exchange rates is incredibly useless. Purchasing power parity needs to be used for useful information, but it is afaik never being used for such comparisons.
And now some gross, not so entertaining graphics:
The list could go on...
Most (almost 80%) of the U.S. economy is just services that don't really constitute economic 'power'.
PR China's industry is already superior to the U.S. industry (EU's industry is greater as well).
Just in case anybody doubts it; the graphics source was wiki, the industry figures were from CIA World Factbook.
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