User blog comment:Larstheninja/Supergirl/@comment-3094698-20130102225244/@comment-34954086-20130103054348

You shink she'd be at all similar to Wonder Girl??
 * Wonder Girl: Fangirl sums her up nicely. Sure there's the insecurities, there's the youth, and we'll get her Archaeology Mama background soon enough. Not much there though. No origin, doesn't particularly need it too much. There's the Superboy which is Way Taken, regardless of how many people wanted it to happen.
 * Compare Supergirl: Clarkie's older cousin (come on, how funny could this be played with Greg at the helm). Growing up on a massively technologically advanced alien planet, just out of hypersleep without having studied a sitcom as her life bible. Plus babysitting Baby Kal-El surely got her some maturity points. Her introduction needs a touch on origin wise IMO. Plus the fragment of her stuff which I want to see, Boomerang.

Other then some powers (which Supergirl would undoubtably ten up her on) and blondness, they're very different from what I can see.