Originally Posted by
John Venus
Power Girl isn't confusing at all nor is she made redundant by Supergirl at all. That's like trying to argue Superman is redundant because of Superboy when they both serve different stories and have different conflicts.
Supergirl is a teenager, left Krypton at a teen age, remembers her home world and while she is at times distraught over it's destrurction, she still has a fresh start on earth alongside her cousin and his adopted family. Supergirl largely appeals to tweens and in inherently a much lighter, fun character. Her appeal is in her wholesomeness.
Power Girl is a refugee from an alternate universe. Her trauma is of a different magnitude than Kara's. She escaped Krypton once, grew up on earth and that earth along with everything else was destroyed and now she is on another earth where everything is familiar to her but so different at the same time. She meets Huntress but this new Huntress is Helena Bertinelli, not Helena Wayne and they don't have a relationship so she can't just go and talk to her like she did on Earth 2. Neither does she have the same relationship with her cousin Kal. Everything is familiar but so different. That's screwed up. Power Girl's appeal is in the fact that she is a grown up Supergirl; she is head strong, smart, takes on more of a leadership role, owns her own company and is incredibly powerful as well. She has a more assertive personality than Supergirl. She is also a mentor to heroes like Atlee, Stargirl and Cyclone. There is an entirely different stories to be told with her but she is often relegated to boob jokes or stories centered around her costume.