Standardized testing, historical influence, Nobel prize results, Fields metal prize results, Senate and House election results, Ivy League enrollment results, Forbes 400 membership, chess grandmaster positions, etc, etc, all point to unusual abilities on the part of Jews. There are only a few categories where they aren't represented to a wild disproportion. To say that "Chutzpah" (aka Assholism) is the reason, is absolute nonsense. Human endeavour deals in intelligence and little else.