This game is worth every penny. Stop listening to reviewers on everything, try the game yourself, and don't give up 5 seconds in. This is currently one of my favorite 360 games, and I've played well over 200 360 games, and currently own 130+ (including XBLA).
It's very sad to see this be a flop, sales-wise, because this is such a great game, and such a great revival of a franchise. Hopefully they'll still continue the franchise, since they saw how profitable at least Rearmed was; despite how great both of these games are.