If you ask me GS has less CAG deals because EB tries to own everyone. Even though GS is the larger presence by far in the bussiness sence (more stores, sells/trades more games then EBs, etc). you still see their marketing all over the now mostly suck techtv, and even a hovering presence over CAG (why is there a morning update?). EB lost their magazine, which imo was lousy anyway, where as game informer is the highest ranked video game magazine and has more subscriptions then playboy (yes, it really does). Gets you access to some pretty cool stuff on the site too. And just so that you don't think i'm being prefferential (which I'll admit I am anyway) I've heard from two industry insiders and my own experiences that EB does not treat it's female employees equally or with respect compared to GS, which has many more women in management positions, and without the glass ceiling. (jerks are going to be everywhere, sure, but it's how a company deals with their hr issues that matters).
okay, that's my two cents. because I don't order used things online anymore either =P