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Yup. Having taken my girlfriend to the last few, she has said she likes it better too.
Then again, being a girl with a UK accent does make it unlikely that she'll ever have to buy a drink for herself at one of these events, as it seems to do something odd to the American male psyche, which can't hurt...
I'm not sure we'll ever see an even split, because the industry as a whole is male dominated at the moment. When that has corrected, you'll see the conference attendance come into line, I think, but one of the nice things about PubCon is that you will be made welcome regardless of nationality, gender, anything (unless you work for a major SE, when you might feel more under siege than "popular")