Also going to reply in English. I've been in Turkey for a few years now and have to say what you say has SOME truth to it. In my experiances, i've noticed if girls are just looking forr a good time (not just sex, but more just socializing, then looks in the opposite sex play a big role. As does income and social standing. But when things get serious i've noticed looks dont matter as much, they tend to marry someone that can look after them financially.
I've also noticed Turkish girls are really into guys from overseas. I dont want to brag, but i've found it alot easier to exchange numbers with a girl, go on a date or two, or have sex after they learn the fact i have a foreign passport.