How is any of this racist, even jokingly where could race possibly come in?
Some people like Rukia, some people like Yoruichi, and some peole (who like bony, small breasted, short prudes (and I actually like Rukia) more than full-figured, jugg-toting, obviously Bi-Curious Sexual Inferno's) prefer Rukia over Yoruichi...and well that's just having 'different' tastes...
PS: Whenver you have a negative thought, think on this: Yoruichi vs Matsumoto wrestling in a kiddy pool full of baby oil, no Demon Arts, swords, or other funky shit (magic step)...who do you pick to take home with you after it's over
PPS: Oh, what the hell...the're topless