I just noticed something about Pikmin 3. Alph is the engineer of the ship, Chalie is the captain, but Brittany is just a botanist. That she doesn't play a major role in the mission to save Koppai at all. Sure she is helping them get the fruit, but since she is a botanist, her only actual job is to research about the fruit. Alph and Charlie are the reason why they can fly to these areas to get the fruit in the first place. In fact, at the end of the day, you can see her just standing in the ship. (although it is just a silhouette from the window of the ship).
On top of this, she is the only character that starts out needing to be rescued. Charlie did get captured by the "whatever it's called (I don't remember)", but he didn't start out that way. Also, him getting captured was solely because of his actions. Brittany starts out trapped with a gate in front of her needing Alph to save her.
Yeah, way to make the male protagonists look superior to the only female protagonist in this game Shigeru Miyamoto.