Not to derail, but this seems like a selection problem, as I have never observed those preferences from women of those ethnicities. (But I haven't dated in decades.) I would suggest your experience would be different, if you were in her community, rather than she in yours.I do not seem to have success with Asian women. Maybe I am not thin enough to their liking. (Actually, I’m not really thin at all.) Neither do I do well with Hispanic women, who seem to put more of a premium on large muscles and designer clothes than any group of women out there- plus they are very clannish. All of the Indian women are married by the time they get off the boat. And while I cannot seem to ingratiate myself to African-American women without submitting to the whole white-people-have-to-hate-themselves-now zeitgeist, I am occasionally a big hit with Caribbean and African women, particularly those from the Commonwealth countries.
Stop and think about her comfort level at the time you are chatting her up.
Being a blue eyed pale white guy in Texas gave me no competitive advantage. Being the blue eyed pale white guy in a Korean community in Texas did, if you get my meaning. The same rule applied in the Mexican community in Texas. Though there's also the possibility that if one is a Korean in Texas, Texans are simply less attractive, and distancing myself from Texans was the trick. Either way, results were Very Different.