I wish that Olimar's Shipwreck Tale was listed as a separate game, because that's 4.5 stars. Among the best experiences with Pikmin, my only complaints being that the automatic lock-on is still around and there isn't a rematch against Groovy Long Legs (the best boss in the game).
However, I'm not letting the mode's quality bump up my overall score. The main campaign still exists and still has flaws.