Where did I heard that argument? In all antisemitic papers before 1930. The Jews get rich not by honest work but by cheating and conspiring. Recently I read an old German pseudo-scientific study on financial criminality among Jews (in Hungarian, because Hungarians are busily translating old German antisemitic materials). Honest, hardworking Arians are unable to rise out of poverty while cheating Semites get ahead effortlessly.
K, who has first hand experience in academic prizes and admission procedures to elite universities (thanks to his talented daughter), has an easy explanation for Unz's paradox. Supposing Jews do cheat and succeed in getting in, does it mean that the Chinese students cant get in because they dont cheat? because Chinese are famous for falsifying academic records and cheating everywhere they can. The answer:
The problem is that they don't know which part of the game to cheat on. They think that higher is always better so they focus on getting the highest possible score instead of the whole package. Speaking to the admissions officers at MIT, they made it clear that beyond a certain ( fairly high) threshold (though they didn't say this, the threshold varies by race, considerably - maybe 300 points out of 2400 lower for blacks) , a few more points one way or the other meant nothing to them. Asians focus all their efforts on getting the highest score, taking the test more than once, attending special cram school, etc. This actually backfires on them and makes them LESS likely to get in than if they had spent their free time playing football (so does other "typical" Asian activities such a playing violin wonderfully).So it is not that Jews got less intelligent nor they cheat more than others, but they learned to stop wasting time and effort in achieving meaningless academic prizes and focus on things that will get them in the elite. Of course.
My daughter (having a perfectionist personality) wanted to take the SATs again so she could raise her score from 2320 to 2400 (or closer to 2400). I told her under no circumstances was she to do so - they would be much more impressed by someone who had achieved a high score seemingly "effortlessly" on one try. And she was admitted everywhere she applied.
I don't blame the Asian parents for being clueless. Having attended college in the US I now understood the game quite well. I recall that back when I was applying, my own immigrant parents were totally clueless as to what the system was - it would not have been more alien to them if I were applying for a position on a Martian spaceship.