It's interesting that the Indian govt uses a bigger PPP correction factor that Pakistan for GDP even though the dollar goes farther in Pakistan. Using a more generous PPP correction factor of 2.9 for India as claimed by Economic Survey of India 2011 rather than the 2.5 estimated by IMF for both neighbors, the PPP GDP per capita for Indian and Pakistan work out to $3532 and $3135 respectively for 2011 without taking into account the latest ICP results from the World Bank.
Haq's Musings: India and Pakistan Per Capita GDPs at $3,100 in 2010-11
Haq's Musings: India and Pakistan Per Capita GDPs at $3,100 in 2010-11