User blog comment:Crazy sam10/Advanced Warfare Create-a-class, item slots, and Atlas Gorge DLC announced./@comment-1055346-20150210203819/@comment-92.7.177.130-20150211101056

All Day Zero did was let pre-orders get the game 1 day early. And since everyone that wanted the game had already pre-ordered, it meant that basically everyone got it on day zero. The only people that missed out were those r that got it at Christmas instead, but that's still the minority of players.