In any random population, of those who score in the above-average range on tests of empathizing, females will significantly outnumber males. And of those who score in the above-average range on tests of systemizing, males will significantly outnumber females.
Baron-Cohen's Law of Autism
What unites individuals on the autistic spectrum is impaired empathizing in the presence of intact or even superior systemizing, relative to non-autistic individuals of the same mental age.