Sounds logical but i don't know about that, most males i've met have no interest in yuri aside from the porn and most yuri are made by woman
Most guys don't really like yuri ( in fact they don't like romance aside panty shots and tits ALA shounen/seinen harem ) it's kind of pitiful but it's true. But when you do simple math that 50% male population and there's about 3-4% homosexuals ( now cut this in half )... At the end of the day, you're probably going to get more male readers because of sheer volume. I do also think there's more anime/manga readers that are male ( don't quote me on this, but I'm fairly sure it's still like this ). I guess this could be found via U.S. publishers.
iono man. i still think male yuri fans are the minority. thats been my experience so far anyway. i recommend stuff like Onani Master Kurosawa or Bitter Virgin and theyll go check it out, but they get skeptical when i recommend Octave or Aoi Hana and they see the yuri tag.
and its not really speaking for the US, but Comic Yuri Hime's readership is 70% female.