Nobody cares about Batman and Hawkgirl in a power comparison with Wonder Woman, they should never even be in such a power comparison.
Flash was much faster, and later even stronger.
Green Lantern was maybe at the core on par, but far more versatile, especially because they even nerfed her equipment. This is a nice vizualization of the versatility difference as example:
https://gfycat.com/plumpacceptableicelandicsheepdog
Martian Manhunter the same like Green Lantern, just that he was a bigger jobber, and less in the action.
Yeah Superman started on par, but got upgraded, and Wonder Woman stayed weak, and ended a bit like nothing else but a Superman in worse.
Aquaman was underwater stronger too.
How was Wonder Woman the 2nd or 2nd to 3th strongest, if even you put Flash just for a while, Green Lantern, and Martian Manhunter on par, which even ignores all their advantages?
True, but less focus would have been arguably a good thing.
Batman was portrayed as the greatest in the DCAU, and Wonder Woman's rouges and mythologies were used terribly, you could even say Circe seemed more like a Batman villain. You seem to have a very odd idea of what a good portrayal is, showing much trash is not a good thing.
Why are you making it sound like the Batman pairing would have been a good thing?
And that makes it ok to screw up 1 of the most iconic parts of Wonder Woman? Would you also say that letting Superman and the rest not fly for a big part of the series, to highlight Hawkgirls wings, would have been ok?
So yet another, Wonder Woman is part of the trinity, but the writing don't reflects that at all moment?
No they are not, 1 part of what you say is not even true and you listed bad things as good things, and to say the DCAU was bad to anyone but Superman and Batman is not making DCAU Wonder Woman any less bad.