Female here. I know like 2 females who enjoy gaming, and probably 50 males that do. It's ignorant and unrealistic to say that it's equal amounts of guys and girls gaming. Most female characters on games are actually played by men has been my experience.
I never said that female and male gamers are equal. What I am saying is that through observation, I can determine from those I personally know and from professional female gamers that the female percentile is most certainly not the 1-5% that so many gamers seem to delude themselves into believing.
It is an observable fact that most of my friends that are women are gamers of some sort, whether casual just playing Facebook/phone games, or more hardcore playing P&P/PC/Consoles. It is also an observable fact that women are quickly becoming a prominent presence on many gaming news outlets such as the Escapist. And on-top of those observation, it is also an observable fact that female gamers are a huge presence on Youtube and Twitch.