Ceric - no, I'm just playing with numbers.

It's interesting to look at this data, but since stores do not give out this kind of information and if an employee was to, say, compile and post such information, they could be fired. So, since we don't have real information to work with, I'm just making up some numbers that I think represent what a small, midwestern store's sales data might be. But, again, it may be off by a point. Equally. Hypothetically.
Kairon - That would take a lot more... err... hypothesizing... I can say that, with my made up experience, of course, that PSP and PS3 software doesn't sell much at all. In this hypothetical store, Wii software probably moves better than most 360 software, except for when something like Madden comes out. GBA/GCN software doesn't move too much, because, honestly, my hypothetical store just doesn't carry that much anymore. DS and PS2 software pretty much top the charts. Hypothetically, of course.
I remember when the PS3/Wii were released. It was pretty easy to keep track of hypothetical sales, but I will make up that we didn't sell a single PS3 title during the launch week (not even Resistance!) but our Wii software sales were about 2:1, not including Wii Sports. Now I just made all that up though.
Anywhoo, Yeah, the GBA sales is pretty amazing (considering the hypothetical lack of GBA software carried by this made up store). The PS2 sales are pretty high as well, PS2 +4 > PSP + PS3 + 360 + GCN + GBA. Some one should fix up one of those fancy pie charts.