If transvestites are a subset of cross dressers, and 90% of cross dressers are heterosexual, wouldn’t the statement “most cross dressers are heterosexual” still be true? Sorry, I’m not being deliberately obtuse. I think there’s a nuance I’m missing.

90% of transvestites doesn't mean 90% of cross-dressers. 90% of border collies are black and white, but that doesn't make 90% of dogs black and white.

Are you saying that most cross dressers are homosexual?

no idea, just pointing out that cross-dressing isn't exclusive to transvestism

Why do you think you’re interested in that being true?

some combination of idle curiosity and an argumentative nature