Obviously they will be more knowledgeable as they have already studied what they need to. A man will also be making wrong decisions if he has not studied properly about investments. How do you expect a woman to be in the system without learning first? everyone was once a beginner too.
It's essential and it isn't about the gender or something along the lines of it - it is simply the truth that no matter who you are, you need to learn.
As a man or a woman, you still need to work as hard as you can to be successful.