I find that hard to believe. I know one girl that is always like "Oh yeah, I dated a German dude once, so that explains everything about him" or "Oh my ex was a Korean, he was too controlling even though that had its perks " or "Oh he's Scottish, I was with a Scottish guy for a while, I know how to handle them" and etc, and I don't think that's just anecdote. Women are the gatekeepers of reproduction, and therefore have to be even more selective regarding ethnicity and other traits when selecting a mate. Even if they don't want to admit it due to fears of being labeled racist, they are constantly sampling new types of dick so that they can find the best possible one to fill them up, and stereotyping is an essential element.
So at least give me a region. South American? Western European? American Redneck? There's got to be some preference.