Can't put down percentages. I can safely say that I couldn't see myself picking a man over a woman.
Seriously? Lets say the woman is 40+, weighs 400+ pounds, and showers every four months. The dude is Thai, weighs about 120, is slim, willowy, demure, dressed as a lady, hairless and well-groomed, showering twice a day and depilating everything.
Playing devil's advocate for a minute, that's why there's more than just two people that live in Thailand (or any country.) If one woman is "unattractive" by one man's standards, he will find another woman that is fit for him. The same thing goes for women looking for men and men looking for men and women looking for women. Hell, if a man wanted to be with a tree, he'd find a sexy-ass tree and mate with it.