From what I have been hearing, Xbox fans are saying Fallout and Assassin's Creed, Nintendo fans are saying Pokemon, and Sony fans are saying Assassin's Creed and Battlefield...
Fallout and Battlefield will fail, I know that. Assassin's Creed has been popular for a long time with average to good and rarely top tier games, this one looks like it could be a good game. Assassin's Creed is fine. Pokemon... ugh... I don't like RPGs... Pokemon will do very well, for sure, It could possibly outsell Smash for a little while. Hardcore Pokemon Fans plus Some Pokemon Go Fans who bought the switch for some other games as well will make it a commercial success, I don't know about it being a critical success though...