Personally I believe intelligence cannot be measured according to gender. It comes down to the individual. There are some really bright people of within both sexes.
Another issue would be how one determines intelligence. When I was a kid it was common to hear people say, "If you are so smart, how come you're not rich?" Based upon that theroy one would conclude that since the majority of billionaires and millionaires are men....that would mean men are the "smartest"
However I once had an instructor tell the class, "Intelligience is the ability of an organism to adapt to it's environment". People have been known to succeed in life using "book smarts" and "street smarts" regardless of their sex. Intelligent people always find a way to get the things they need and more often than not the things they want as well.