Well, maybe they felt that while Fallout 3 and MGS4 were good games in their respective genres, Fable 2 had more general appeal overall and thus deserved their highest award. Not that I am a Fable 2 fan in any way, but I can see their reasoning. Gamespot gave their GOTY award to Serious Sam one time. They said it was the one game every editor could agree didn't suck. Every other game had at least one person who was against it. There really is no accounting for taste.