If you want ammunition against those claims, you should go back to math, not these studies: all claims show the gap to be small and the mean to be very close.

Most importantly he variance between groups is smaller than between individuals. This means that you have no way of knowing when you meet someone whether they are good at math because of their sex. That's the most important lesson for most people: don't be biased, because you're probably wrong.

The same argument applies to the race/IQ discussion. Variance between groups is smaller than between individuals.

So even if the claims of innate superiority are correct, you should treat individuals with respect.