* Justin * Bieber * Wins * Artist * of * the * Year * at * 2010 * AMA's * HD * Performing * Pray * 11/21/10 * Best * New * Break * Through * 4.0 * Nominations * Awards * Cool * Performance * Ever * Youngest * To * Win * American * Music * Hot * Single * My * Worlds * Acoustic * Album * ABC * November * 21