Dare I answer this question? Just kidding.
I would have to say that gender, just as well as race and religion, has nothing to do with someone's intelligence. It depends on the individual.
It's also hard to measure if someone is smarter than another. What one person is clueless about, the one that they are being compared to may be a genius about, but it can go the other way on another subject. Someone with a Doctorate will be said to be smarter than a fifth-grader, but have you watched that show, Are You Smarter Than a Fifth-Grader?
Of course, if I'm being compared to my wife, she is smarter no matter what.