I'm guessing it's based on your highest win streak, so when under the wins column, that's just like a win streak tally, instead of a win/loss record. I guess you move up in ranks by getting a higher win streak, but I'm not sure though. I've lost to quite a few high-ranks, like Spicy J, who plays a beastly Potemkin. Pretty much everyone can beat me though, because I suck.