despite numerous female characters being stronger or otherwise more powerful that her
Not particularly, actually, no. Zee might be, depending on the weather, and you could probably make an argument for Babs (though I think you'd lose, especially recently), but that's about it. Lantern/kryptonian/Marvel/martian/demigod class is the highest standard weight class in DC; everybody higher up, like the Spectre or the Guardians or the Phantom Stranger, is an old white guy who mostly stays out of normal mortal affairs except through mortal agents.
Particularly now that Madame Xandau's had a power downgrade. -_-