The thing is that while Smash will indeed pwn with a vengence, its still not a big change from the Smash formula (which is good). But SSBB's biggest problem with reviews and such will be that its not quite as fresh as it once was. I have a feeling that reviews will say something like "Nintendo has matured the Smash Bros. formula to perfection, the online adds replay value to an already awesome multiplayer experience but at the same time its still very similar to the previous installments and isn't quite as awe inspiring as a result". Where as IGN has said that Mario Galaxy not only looks amazing, plays amazing, but because of the new worlds, gravity and the like, feels as fresh as Mario 64 did all those years ago. Thats why I think Galaxy has an edge on Smash when it comes to being a GOTY. Just my opinion though.