What do you mean? In personality, or how close they are to being royalty, or what?

If it's by personality, I can't vote, because there's no real princess "personality".

Actually, I've always found Ariel to be the least princessy of the princesses. Pocahontas is noble, strong, and cares about her people. Mulan cares about her people and makes a great leader I find Ariel to be very unprincessy. She's clumsy, she wouldn't be a good leader, she doesn't think before she acts...

Agreed.

I consider Pocahontas to be very "princess like"

Mulan a little bit but very much.

I think they both have qualities of a princess but Pocahontas is a "real" in her culture and Mulan is not considered royalty at all.

^^Actually no. Powhatans voted on their leaders.