Black Ops 2 Preorder

hi, I'm thinking about preordering BOps 2 for PC. On Amazon, it says that preordering the game regularly(not deluxe) will come with the Nuketown DLC for both multi and zombies. But on Steam, preordering it regularly will only give you Nuketown DLC for multi only and not zombies. Will preordering it regularly on Amazon actually get Nuketown for zombies? I'll get Nuketown for multi regardless of whether or not i preorder from Steam or Amazon.