It's a popular sentiment thrown around that Jews have a high IQ and that's why they're socially dominant. I have come across some critiques which challenge both of those notions. The problems with the sentiment is that it's based on citations of few studies over fifty years old with small sample sizes involving populations and study designs not meant to discover group-wide IQ performance.
The Myth of Jewish High IQ
Before all other things, I study power and politics.forbiddentexts.substack.com
One of the studies is further dissected here:
The myth of Jewish intelligence - Vox Popoli
Allow me to demonstrate why it is a bad idea to try to bullshit those who are considerably smarter than you are. We are often told that Jews are the smartest ethnic group in the world and that this explains their current position of cultural and socio-economic dominance in the United States...voxday.net
This article remarks that even giving the benefit of the doubt and assuming the 115 IQ is true there's still numerically far too few Ashkenazi Jews compared to Europeans, such that the quantity of High-IQ non-Ashkenazi European is still much higher than the number of High-IQ Ashkenazis, and therefore has no ability to explain their dominance.
Then there's predatory behaviour - I'm not saying that all jews are predators, but a predator type who can identify other predator types in a population of people that have no idea about an intraspecies predator or how to identify them and their modes of operation, that predator doesn't necessarily have to be that smart. Was thinking about this earlier. Even a predator that has poor hunting skills and limited impulse control is more likely to be able to catch and kill where there is a large number of prey species that are unaware.