I mostly agree.
Some points though.
Morrison had the JLA beating some Angels, but he made it clear that they were weakened by being forced to use "physical" avatars.
Even so Asmodel was unbeatable in that story and the JLA could only banish him.
As for the Olympians fighting New Gods.
I could see say Apollo fighting and beating a character like Lighray but IMO the only Olympians strong enough to go against Darkseid and Highfather and be perceived as equals would be the big 3 Olympian skyfathers Zeus, Poseidon or Hades, who should be above any other Olympian (and maaaaybe Ares as a chief villain of WW and well being the god of war).
Plus WW does get a boost when she drops the bracers, but she still is a demigod (beating Artemis is a little iffy imo). She should not be able to pose a real threat to higher level gods like Zeus or Darkseid.
IMO of course.