They're the only store in NA with the Arsenal Shipyard preorder content, right?

And gamestop is the only source for the other two?

I am not sure.. My dad pre-ordered AC2 at gamestop, I know that if you preorder it at Gamestop you can get 1 free map or something like that lol. You can get like one with like 2 maps, an action figure of Ezio and other stuff... But it costs more money