It's a sad thing to say that a lot of theatre about homosexual experience is pretty bad. The thing is, it doesn't need to be good. Queers are so starved for entertainment that reflects our lives, we'll buy tickets to any piece of trash that has gay characters in it. Especially if there's a hot guy on the poster and it's implied that he'll get naked.
I once was handing out postcards for a Gay play of mine, and a guy asked if there was nudity- I shook my head, and he handed the card back.
Which is not to say that there isn't good Gay theatre out there, it's just hard to know when the plays are good or just well-marketed.