It depends on where you are. While growing up in the U.S. I've noticed that most Oriental girls went out of their way to date white guys. There was definitely some self-hatred going on regarding one's own race. One gal once said that dating an Oriental guy is almost like dating your own brother.
On the other hand, if you're in Japan a white guy may not always get 20 points right away for being white. Perhaps because most women in Japan don't speak such good English and it would be too much of a hassle to date a guy who didn;t speak Japanese too well.
If you noticed, I don't use the term "Asian" to describe the Mongoloid race. I use the old-fashioned "Oriental." To me "Asian" is improper since there are people of different races living in Asia and Chinese, Japanese and Koreans have no right to claim that they;re the only Asians. Also, "Asian" only refers to a geographical location rather than a racial category and therefore it perpetuates the stereotype of Orientals in the U.S. as foreignors ("Where are you from?" "Do you speak any English?"). Many of us who are U.S. citizens wnat to be considered and treated as legitimate Americans. If you called a white person a "European", he would most likely respond, "I'm NOT a European, I'm an American." To refer to such a person as European is to treat him as a foreignor and that is improper. Likewise, I am NOT an Asian. I am an American of the Oriental race.
BTW, many blacks do not want to be called "African-American" and many Indians do not like to be called "Native-Americans".