Arthas vs. Aang

Idea is mine, though based on the Tournament of Mortals...

Arthas: A former hero, Arthas has embraced the role of the Lich King, and now seeks to subjugate all life to the undead Scourge.

Aang: The Avatar, the boy who wields all elements to fight oppression, and liberate the world from tyranny.

Now, the Lich King and the Avatar will come to blows, bringing all their frightful power to bear. One fights to dominate, the other to liberate. One upsets the balance of life and death, the other restores the balance of living and spirit. In this battle of good and evil, only one side can triumph. Only one side can be declared...

THE DEADLIEST MORTAL!

Finally, in a classic 'To the Victor Goes the Spoils', after you pick a winner, pick something for them to take from the loser. It may be something as simple as a piece of equipment, to something as complex as a power. I'm just curious what you all would say.

(Disclaimer: Just to be clear, these two combatants were created / are owned by people far more creative / wealthier then me. I have made this, not for profit, but in the hopes of encouraging spirited discussion among fans. Please support the combatants official series. Thank you, that is all).