You know what immigrant population, statistically, is even more successful than the stereotypical "model minority" Chinese and Indians? Immigrants from actual Africa.
Edit: I'll answer my own question, in 2008 alone African immigrants only accounted for 3% Asian immigrants (which includes India) accounted for 53%. I'm sure that's not a recent trend.
In a more general form, it would be nice to hsve some reference to the statistics on this since it's very interesting.