Numbers is actually a rather insignificant part of math.
It's going to take me quite some time to get my head around this. Could you elaborate?
"Numbers" is arithmetic. Beyond numerical analysis, higher mathematics doesn't really deal with that kind of stuff (calculations with numbers) at all. Even number theory has little to do with "numbers" the way you probably think of them, but instead relates numbers to extremely abstract concepts, you won't see many ones and twos floating around in math papers. Mathematics is the study of certain abstract axiom systems and abstract objects within these systems, and of logical reasoning itself. Mathematics is essentially generalisation of logical patterns that underpin reason and science.
Alright but then why do Asian students far outperform European students in mathematics in America?
It doesn't have to do with who performs better.
The largest employer is the military, I would guess.
Close. It is the NSA. Without the NSA and other similar organizations, there would be much less interest in cryptography and by extension number theory. So the focus of mathematics research is not neutral.
Another thing: there was a "split" in mathematics during the latter half of the 20th century between French and Russian mathematics, and many mathematicians still have very strong feelings about it, spewing vitriol against "French" or "Russian" mathematics.
Russian mathematics are thought to be very pragmatic, intuitive, and maintaining a close relation to natural sciences. The reason behind that was both cultural and a result of the science boom in the USSR which was intended to give a technological edge to the country, facilitate planning, and aid development. That incentivizes practical, concrete math that sticks close to natural sciences.
French mathematics came out of a country that was already developed, but also very appreciative of abstract reason. So French mathematics developed more as a very abstract art form which focused on strict formality, very abstract concepts, removing all particular features of the objects of study that the theory can be generalised as broadly as possible, and building massive structures based on rigorous but unintuitive axioms.
Now, if math was just all the same and completely neutral, there wouldn't be all this disagreement, would it? To be clear, it's not that they thought the theorems each school came up with were "wrong" exactly, but that their entire approach was wrong. Although then there is the constructive vs predicative vs classical mathematics debate, which has some sides that consider the mathematics the other side proposes as basically wrong, and it's a massive rabbit hole with no way to "objectively" tell who is right.