It's hard to choose, because Christina is known as a legend, and Pink is still struggling to get that title. She's like an underdog, despite her being in the game just as long as Christina's. I feel like people recently re-discovered Pink after the "So What" era.
My ego isn't so inflated to care about being considered a 'legend' when I would be getting money from mah tours and the fact I can still shift a ****-load of albums.