It's not the first place for population information to support the comparison, and it's a fact that US-Thrall turned seriously Horde heavy a while back (near the end of Wrath, if I recall). Used to be a mostly balanced server...now we have 5 total Alliance guilds in the top 120 on the server (top two are 30 and 40 respectively, with the next showing up at 109). Was a bit of a tongue in cheek comment, though...when I last played with any regularity (early to mid-Cata) you could barely turn one way or the other without bumping into another Blood Elf. Was a bit of a game between my friends and I at the time...spot the non-Belf horde player.