World of Warcraft lvl 85

Yesterday i was playing the game i just noticed that the first lvl 85 mage was already here. If you were playing Alliance and the winner of the achivement was horde it went all over the realm. what i know is that the Death knight and the mage cant have that achivement because someone already have them. Can you believe lvl 85 under 24hrs which i heard it was super hard to get there but wow is all i have to say.