I take it you support the internationalism theory? Do Jewish people even have any more international contacts than any other immigrant group? And surely this internationalism cannot account for things such as high educational attainment or Nobel price winners?
I ended my post you refer to with:
For me the real bottom line is family trust and family loyalty of a few rich Jewish families, being strong enough to handle big amounts of money long distance. That family trust and loyalty greatly strenghtened by a separate religion under surpression, forging strong ingroup morals.
Jews are not the only group with that strong trust-loyalty-family-extended family network, that functions close by and long distance and is in less need of formal tools.
The Italian Mafia, without the violence, has a similar trust-loyalty strenght not hindered by borders. And do note that in Italy the mafia was the peoples system against surpression by nobility/state.
Bootstoots mentioned Chinese immigrants. Same similarity. These three have all their own habitat in society. Romany gypsies could be added with again another habitat.
The difference with Jews is that Jews have a much bigger geographical network, have some families with lots of money, have climbed up into the elites all over the world since centuries, have a religious tradition that is much more demanding, in being separating, in intellectual reasoning and schooling tradition.
That's a lot of positives in your backpack.
And surely this internationalism cannot account for things such as high educational attainment or Nobel price winners?
Most people that got really high up in society, business, in achievements, were/are very dedicated, focused and mostly also ruthless with their time priorities. No 8 hour working day. Not that much time for children, etc, etc.
A nerd schoolfriend of me was very gifted, scored max grades at secondary (10's at a scale of 1-10), studied at the same time math and chemistry, one for cum laude, got already at secondary school two national prizes (one given every year and one only by exception). But his hobbies, and playing games together with friends, were always more important to him than a "Nobel Prize". So he did some nice professor job until 50 years old and had saved up enough money for early retirement, to have lots of time for his hobbies.
Did he achieve much in the sense of high ranking positions or some scientific breakthrough ? No.
Was he valuable for the people around him, in his job and in private ? Yes.
It all depends on the kind of measure stick.
For the societal measure stick you mention, you do need most of all lots of dedication in amount of time and focus (and directed at achievements)
I think that the Jewish backpack contains also on average more of these drivers as most other people.