I've played a bit of the first one and it was okay, nothing special though. So I wont get the second one, and one the reasons is, cause I don't even own a Wii, I had only played the first one at a friend's house.
But a contender for Game of the Year? For the Wii, yes, but all in all, hell no, many other games have already risen high up, like God of War 3, Red Dead Redemption (which I have yet to play), Alan Wake (same as RDR) among other games.