Or just: when China's per capita GDP surpasses that of the US (since the 4.2 probably won't remain constant).
India, however...
[1] http://en.wikipedia.org/wiki/List_of_countries_by_GDP_%28PPP...
The US remains the landmark.
[1] http://en.wikipedia.org/wiki/List_of_countries_by_income_equ...
I'm not. Why on earth would you think I meant that?