If we hadn’t just watched both series back to back last month, I would have agreed with you but upon a second viewing, Korra has become my favorite. The storylines are little more clunky but the complexities of politics make for high drama and higher stakes. Plus, action scenes in Korra take the series to the next level.
They should make another about young Uncle Iroh and his journey to become the dragon of the west. Everyone loves Uncle Iroh!