They're in the OP of this thread all ATK can be lowered to 0 and 1 depending on even or odd for their associated spreads.
No, they're not oblivious. Gamestop is
actually stupid and forcing people to preorder ORAS to receive their serial codes for the megastones and that's not how the event operates, but they're forcing it on customers. The Gamestop near me is not so stupid, but many Gamestops around the nation have adopted this (they also have posters hanging confirming this information) the misinformation is sickening.
Edit: To top it all off not every store has the poster and many of them have small cards that are this size ----->
In some obscure place, they also have a limited amount of them. [Obv code used]