User blog comment:Arrow7000/Avatar Aang vs. Lord Voldemort/@comment-4555900-20120526224123

Aang is a master of Airbending and Waterbending, with his glider making his Airbending techniques stronger and giving him the ability to fly. Waterbending will allow Aang to trap and hinder Voldemort, who will have to block everyone of Aang's attacks, since he doesn't have the agility to dodge them. He is very good at Earthbending, which should be able to block all of the attacks Voldemort throws at him. He is fair enough at Firebending and can use it for his "beat back" attacks. The Avatar State allows all the past Avatar's that are inside of Aang to grant him their knowledge, essentially making him an unstopable machine. He takes all of the important X-Factors except Intelligence, which isn't a big of a difference anyways. He can dodge most of Voldy's attacks. He has fought tons of enemies that are just as brutal and willing to kill as Voldemort, and bested them all, including Firelord Ozai, one of the strongest Firebenders in his time while his Firebending was increased from Sozin's Comet.

The Killing Curse will kill instantly if it hit's yes, but Aang is so agile that it's likely he'll be able to dodge it easily, or block it with his Earthbending. The Cruciatus Curse will cause extreme pain yes, but again, only if it hits. The Imperio Curse is a special case. Aang has all of the past Avatar's inside of him, so I have doubts as to whether or not the Imperio Curse will actually affect Aang, as the other Avatar's may be able to dispel it. Especially while in the Avatar State, where all the past Avatar's directly help Aang.

Voldemort's wand can also be knocked away. While not disabling Voldemort, he is much less of a threat if he has no wand to work with, as wandless spells are much weaker than if they were used with a wand, Aang cannot be disarmed unless Voldemort somehow learned to chi block him. All of Voldemort's other spells are weaker than Aang's bending, and can be dodged by Aang. Apparation is a problem, but Voldemort can't do it forever, it'll wear him down eventually, and Aang will be able to locate him easily after he's worn down a little.

Aang is just overall the better fighter, with more versatility, and almost all of the important X-Factors, Aang has this in bag. He will defeat Voldemort, likely without killing him, while probably not even being pushed into the Avatar State.