Not as a percentage of population. Of course the "brightest" of any race are those we see outside of their geographic origin. Chinese people in Vancouver for example are very bright and very driven and very good at hard work and business. It doesn't mean that all the approximately 1.5 billion Han Chinese on the planet are that way, just the ones that get here. The same can be said for the Jews who survived the genocides that occur roughly every 50 years throughout history. If your ancestors survived you are probably bright. If your grandparents came to Canada you are probably bright.