This is about a different phenomenon than the point I was making. The question is often raised why Jews seem to be, or to have been at one time, over-represented in banking. The answer is that Christians weren't allowed by their religion to loan money and charge interest. Jews had no prohibition against it, so they cornered the market by default.this is a very important point. in his book The Jewish Century, Yuri Slezkine makes the point that all societies have their own "jews". and what this amounts to is a sort of division of labor. Slezkine refers to the two groups as Mercurians and Apollonians. Apollonians are generally the warriors and farmers, and represent the indigenous population. Mercurians deal in trades that are easier for strangers to perform for various reasons, such as taboos, but tend not to be arts that are more labor-oriented.
i've also noticed a lot of sharp students here that are indian (continental), so for years i had a pretty high opinion of them generally. but i think perhaps what i might be seeing is simply a subculture of people that find their way here. same may be true of say, chinese. jumping across an ocean into a strange land is still a significant hurdle for most folks, and so i'm not sure it's good to read too much into the achievements of those who make it here, other than that they probably also represent high achievement in their lands of origin.
That's a different issue than the general level of scholarship that is part of their tradition.