Awww, you don't like Dumbledore? But he can turn into a phoenix or something.
*Sarcasm*
Well anyway, Gandalf is better because, he led an army, and fights with them too. Let's see Dumbledore do that!
--------------------------------------------------------------------------- -Just one kiss took away my breathe,- -And you drew me in with your tenderness,- -You captivate my soul, I'm enraptured.- -And you knocked me out, and you locked me up,- -You stole my heart like a thief in love,- -You hold me tight in our happy ever after,- -I'm captured.-
Don't forget Gandalf's sword too, he calls down lightning with it like when he fought and slew the Balrog of Morgoth (which is ten times cooler than a phoenix, and more flame-y)
And he's lived 300 lifetimes so far, so knows a lot about a lot
And he has the fastest horse in Middle Earth, I bet it could beat any broomstick.
Gandalf just kicks ass, Dumbledore is too old and feeble compared.