It's not even necessarily a numbers game: they just don't think there's a moral difference, therefore treating one as "normal" and one as "abnormal" (even if that's objectively true based on statistics) is equivalent to making a moral judgment against the "abnormal" case. Society is still treating the gays differently (even if they're being polite about it), therefore society is acting immorally and will continue to act immorally until both lifestyles are treated as equally valid.

It's also why we have to go around pretending that we're all at equal risk of contracting AIDS instead of taking the Norm MacDonald approach of "we already have a cure for AIDS: don't fuck other dudes in the ass".

Trannies will be the same way: you will not be allowed to express a preference for normal people or trannies, because expressing that preference will be considered immoral.