rachelmanija challenged the assertion that epic fantasy is by boys for boys, and wonders if male authors get more support from publishers. So I thought I'd look at the gender ratio in webcomics, since that medium doesn't have gatekeepers to bias what is published.
Disclaimer: I'm looking at webcomics
I like, and I have a clear bias towards strong heroines. And this is, of course, only a tiny fraction of all webcomics, so feel free to mention others in the comments.
Italicized titles may not fit your definition of "epic fantasy", NSFW indicates nudity.
Male creators:
Chainmail BikiniDM of the RingsErfworldFlipside (NSFW)
Looking for GroupMyth AdventuresOrder of the StickRed Tails Female creators:
Delve Into FantasyDiggerDumnestor's HeroesGaranosInverlochThe Meek (NSFW)
No Rest for the WickedThe Phoenix RequiemRed TailsRoza That's 7.5 : 9.5, or 44% male. Which is a surprise; I decided to make this post because I thought the women would significantly outnumber the men.