How does the Theory of Evolution, particularly sexual selection, explain this large gap between males and females in driving sex selection without taking the position that both sexes matter? And how does one explain the fact that sexual dimorphism in humans is quite limited compared to other apes like Gorillas?

I don't want to hear about " modern sociological phenomena doesn't have to follow mirror evolution". We're talking about SEX, the most important activity besides the activity of getting food and water.