Well, that's what a new podcast by Eric Wallace seems to suggest among other things. It also suggests that Karen has or soon will have superpowers---though no word is given on how she gets them, or if she already had them. And yes, Karen, not Power Girl, so they would seem to be one and the same person as they normally are.
About 29 minutes into it.
For those who care BTW, the Ryan Choi thing was editorially mandated.