They're not letting you use certain characters, stages, outfits if you don't pre order from a certain retailer. By the way, that's content that's probably already on the disc. At least content they already made and they are now keeping from you if you don't pre order from Gamestop. That's not free, because everyone knows the prices will drop soon after release.
That's like buying Fifa 13 and finding out you can't use FC Barcelona and Camp Nou isn't included because you didn't pre-order.
Don't fucking support this shit.