They all have their own great qualities. You can almost make the comparison that they're like the triforce in a way. Daisy is power, never one to back down from a fight and being no so girly. Wisdom is Rosalina, with an answer to almost every one of Mario's questions and a vast knowledge of multiple galaxies and universes. Peach is courage. She is constantly kidnapped Bowser among others, and she always finds a way to sneak around and somehow help Mario on his quest. That being said, they're all great in their own ways.