You're right about AC2, especially since it's a relatively quiet year for hits (2009) so getting a nomination shouldn't have been that hard. That said, it has a lot to do with who is voting, money spent on promoting the game, etc., and I'm not sure it would have won GotY even though it might even end up on some people's top games of all time.
Fun fact, apparently same year Minecraft released. Lol (I looked up a list, that and LittleBigPlanet are my favorite of the year).
Depending on how slow the people in front of me are, I'm also more homicidal! At least Sonic has a lethal spin dash for such occasions.