I've done a lot of research on this topic and I finally found what the real difference of intelligence is between men and women.
Let's look at the following bell curve:
The average IQ score is between 90 and 110. As you can see, most of the females fall under the average IQ category. Whereas, males seem to have more of a variety of intelligence test scores.
What does this all mean?
This means that there are more men who have low IQ scores than women, but this also means there are more men with higher IQ scores than women. Some people believe either gender is inherently smarter, but that is a mistake.
None of the sexes is "smarter" than the other, because even if we argued that there are more genius IQ'd men than women, the counterargument would be that there are also more idiot men than idiot women! This in turn goes to my next point...
Why are most notable people in history men?
There are many reasons behind this question. One of them is that most genius people tend to be men, but the other main reason has nothing to do with intelligence or mental strength. It more has to do with socialized roles that females have adopted, as well as males, and this is what prevented females from being "notable" throughout history.
These women include:
Cleopatra sought to defend Egypt from the expanding Roman Empire. She was a strong female amongst oppressive males. She took this power to improve her society.
Queen of England during a time of great economic and social change, she saw England cemented as a Protestant country. During her reign, she witnessed the defeat of the Spanish Armada leaving Britain to later become one of the world’s dominant superpowers.
By serving in the Crimean war, Florence Nightingale was instrumental in changing the role and perception of the nursing profession. Her dedicated service won widespread admiration and led to a significant improvement in the treatment of wounded soldiers.
Susan B. Anthony
Susan B. Anthony began campaigning within the temperance movement and this convinced her of the necessity for women to have the vote. She toured the US giving countless speeches on the subjects of human rights. She must have had a lot of strength and mental prowess to convince people to agree for women to vote, in a society full of oppression and patriarchy.
And many more!
In my opinion, I think that the fact that there were even any females who were notable throughout history is very impressive, with all the oppression and sexism going on during the past centuries.
Throughout history we've learned that men and women have acquired different roles, each of them with their own importance and definition. Intelligence scores that are nowadays seen as IQ scores have also been made to compare different social groups, including men and women.