User blog comment:Nkstjoa/Official Wiki Death Battle Wishlist/@comment-73.168.128.160-20150718180940/@comment-64.237.229.247-20150804041234

that would depend on the timeline since each has been developing their skills. korra initially had learned three of the elements while aang mastered one but along with the fourht has learned to sense  the earth, aang prefers wasting his opponents energy while korra is a bit more with brute strength. aang is calm and patient korra is more temperament. While going through the timeline aang is more experienced fighter and bender including energy bending