The evidence of the last three years is that India's economic growth has moved into a higher bracket, optimistically to something close to 8%. While China's rate of growth, on a large base, is still higher the narrowing of the gap is bringing the strengths of the Indian economy into sharper focus and prompting more detailed comparisons between the two countries. At a very gross level two features stand out: China's investment rate is much higher, and India's utilization of capital is much more efficient. Currently, the first effect is winning but one can wonder (and I would guess) that this cannot last for ever.
Two recent pieces shed light on these matters.
Andy Mukherjee of Bloomberg
summarizes a recent Fitch report which discusses why the Chinese save much more (absence of decent returns on savings) and how India's government deficits (dissaving) are at the root of lower investment. Mukherjee himself is not convinced that the Chinese "model" is sustainable as much of the extra investment is channeled into state enterprises.
Separately, Yasheng Huang of MIT
revisits his work with Tarun Khanna on the strengths of India's private sector and notes that the intervening two year have been kind to them.
What all of this suggests to the politically minded is that we look for a "tipping point" where India's rising rate of growth edges above a declining rate of growth in China. While this will not redress the actual size of the two economies, it will certainly cause a shift in perceptions of considerable consequence.