Why are we comparing performance on "science", when there are hundreds of sub-disciplines that fall under that umbrella? Isn't it reasonable that in different c

Why are we comparing performance on "science", when there are hundreds of sub-disciplines that fall under that umbrella? Isn't it reasonable that in different countries with different cultures, you will see men and women move into different disciplines, and therefore develop different scores on some generic "science" exam? This looks like journalists attempting to get screen-views by using some vague data to stir up battle-of-the-sexes arguments.