I know it's for funI used "Superman" on purpose, because Supergirl's character arc is all about living up to the standards set by Superman and being worthy to wear the S Shield. She isn't quite the paragon/exemplar/inspiration that Superman is.Though there are a lot of similarities in the personalities of Korra and Kara, Korra's role in the Avatar universe is more like Superman's role in the DCU....Which is more detail than you probably wanted...my bad.