The easiest race to pick up depends on what race you are. If you are white, you are set. If you are black, life's a bit tougher but you still should have it pretty easily, If you are latino, you are on about the same scale as the black, maybe a little lower, and if you are asian, hard luck.
I've observed many things throughout my life and interracial couples is one of them. The most reoccuring thing i've seen is minority women throwing themselves to white guys (partically asian women). My mom is Colombian and I asked why there is never minority women throwing themselves at other minorities and she said that her and her sisters were raised to idolize the white man and believe that the white man was so great, they were practically one step below God. This is definitly worse in Asian culture. There entire society is based around honor and what better honor is there to them than being with a white guy? For black males (or mulattos like myself), this mostly does not apply. Luckily for us, most white woman love a black guy. Likewise with a hispanic. Lastly, Asian men have it the hardest. Studies have found that asian people generally have the lowest level of testosterone and highest levels of estrogen. This makes them unappealing to girls of other races. This is also why alot of guys from other races find asian women so damn sexy. Likewise, black people generally have higher levels of testosterone which makes us appealing to girls of other races yet nobody wants to touch our women (me included lol).
sorry, i just re-read this entire thing and its the most incoherent thing i've ever written but i'm running on 3 hours of sleep so sorry for making you read through that mumble jumble