That's not a fact, it's a pie in the sky theory based on nothing but your confirmation bias. Which by the way, I don't have to accept.
I won't disagree that Asian guys might be disadvantaged because of certain stereotypes, but it doesn't mean whites are the most advantaged.
Black men are the most Alpha, and ALL women love that. A lot of black guys could clean up with these barbie dolls because it's on all of their bucket lists to sleep with one at least once.
It's not a pie in the sky theory. If you look at online dating statistics, it clearly shows that white men are favourable over other races on average. If it is still your perception that I am fooled in my judgment, which I am not, then allow me to elaborate.
Pretty much all of my ethnic friends, black guys included, have complained about this. They say that they definitely feel a prejudice in the dating game, and in life also. I have even heard stories from them that when dating a white girl, the girl feels reluctant at first to introduce them to their parents. Whereas my white friends don't have these problems when dating interaccialy, in other words, they have no complaints.
You basically admit that there are stereotypes putting other races down. If that's the case, why is it so far fetched to believe that other races that don't have these stereotypes to be at an advantage? When you think about it, the media has helped us in relating a negative stereotype to quite a few ethnic groups. For example, being Asian or East Indian makes people assume you are a book nerd, being Middle Eastern makes people think you are restrictive on women and super religious or a terrorist, and being of African American descent has the connotation of being thuggish attached to it. When white comes to mind, no specific racial stereotype is attached to it.
Yes, some women do like to try a black guy for the experience, but not all of them. And when they do, it's not necessarily for an LTR. From what my friends tell me, it's usually STR's or ONS, because like you said, they want to try it at least once.
Once you take a look around and observe reality, a minority of these so-called white barbie dolls are in LTRs with black, or any other ethnic guys. This is in western countries at least, and not in countries where this may be different like Russia.
You also need to consider, why is it always ethnic guys complaining about a racial bias against them in the dating game? Why is it never white guys doing this? It's not hard to see that meybe dating and interaccialy dating in general may be easier for the white male.