lets just say, in my area bestbuy has the best selection of wii games out of all other stores. Walmart in my area doesn't have enough for shelf space for Wii alone, besides the fact they stick all 5 systems in those cases. Target is slightly better, but still they should probably have another whole isle dedicated to gaming.
At my BestBuy, Wii and XBox360 have about equal amount of shelf space, and the Wii has been quickly expanding, while the PS2/GC is being reduced.
It terms of visibility, the Wii & PS3/2 is in the center isle, while the XBox360 is in the back isle (closest to the TV's) but in terms of easiest area to see while in the store, I don't really think it makes a difference (unlike where the GC games are, which is more towards the CDs, but also piled with other crap)








