Yeah I don't believe any toy manager has that ability in WM or Target... What is possible though is that the demographic information for any particular store's area indicates that this or that may not sell well so they don't carry it.
For instance, a WM opened along my city commute in an area that's fairly well off however the area is accessible by lower income areas fairly easy so the shopping is kind of bad. Most of the people that actually live in that area don't go to the stores there, including the Wal-Mart. The information I've heard about this WM (one of the rare times a WM renovated an exisiting building btw, it's the first time I ever saw this myself), is that this store carries very little Star Wars product (didn't carry much through ROTS even at its height of popularity) because it tries to focus on lower priced toys like Chap Mei figures and items like that. Star Wars just too expensive to cater to the demographic that most travels this Wal-Mart.
Department Managers at WM are really just the handlers for the area... More or less. When I worked retail for Penney's we had the same basic people running different departments and they only had slightly more responsibility for only slightly better pay. The ordering was done by merchandisers primarily, who did full orders or manipulated the running inventory system. WM's running inventory system is store-wide and managed by the district offices with only suggestions from store managers being accepted as to what to carry, but not necessarilly changing anything.
I've gotten the "We're not carrying that" anymore too. It is a cover for "Please don't ask me anything, I just want to get my 7 hours in and go home, please leave me alone".
