I've worked with wonderful, brilliant, all-around great developers who came from India. What helped me a lot is that they had passed a strict self-selection process of going to the US and working for a US company (or several).

When searching for equally brilliant developers in India itself, I would have to somehow reproduce the effect of this self-selection to get the same wonderful results.

Same applies to a few other countries from which I've seen brilliant colleagues, such as Russia, China, or Turkey.