User blog comment:Thornclaw Braveheart/Gandalf the White vs. Albus Percival Wulfric Brian Dumbledore/@comment-1728211-20111210103606

I CAN NOT EXPUNGE THAT ACCURSED, CATCHY TUNE FROM MY MIND!

Anyway...

Close range: Glamdring has a charm to prevent the hand from being hurt by blows during sword combat. Godric's sword needs the Sorting Hat to perform its trick. Add to that the effect of the staff and Gandalf breezes through this one.

Magic 1: This one goes to Dumbledore as the Expelliarmus charm is powerful against magical items.

Magic 2: The stunning spell "Stupefy" has been seen to fail against the half-giant Hagrid while it takes seven wizards using the charm to defeat a dragon. It just doesn't seem strong enough to do anything more than annoy Gandalf. The Reductor Curse is stronger but there is reasonably little scope for use, unlike Gandalf's Blinding Light. Gandalf takes this round.

Special: If Gandalf is still in control of the staff, there isn't really a contest here. Gandalf again.

Protective Spell: Shield of the Istari is far superior in terms of protection. Gandalf wins.

X Factor: The Elder Wand doesn't bestow automatic invincibility. Dumbledore himself proved this when he defeated Grindlewald. The Elder Wand responds to raw power, the power of the reborn Maiar will "appeal" more to it than the power of a human, well-versed in lore as they are. Gandalf wins.

Final note: This battle was rather closer than my voting has made it seem. I rather believe that if this were Gandalf the Grey, the duel could have been too close to call.

Advantage: Gandalf the White.