I think it's fairly clear that the 360 has a superior library at this point in time.
On the other hand, all 3 of its top 3 games are First Person Shooters, and 6 of its top 10 are shooters (7 if you count Mass Effect, which is more an RPG). If you aren't a fan of shooters (or in my case, shooters with a game pad), then the value of the library drops dramatically. Both the PS3 and particularly the Wii have greater variety in their top 10 games.
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