Different writers working on a singular continuity. Since Savin is a shit project lead, he doesn't enforce a coherent narrative in the CoC 2 world so things feel disjointed. Your MC acts completely different depending on who is writing because some of these writers hate having to write for the PC and sometimes make them a third wheel or do the dumbest shit possible.Nah, this isn't right either.
Harley got her solo literally an issue after what I just said happened, and was treated like a hero by people relatively soon (Honestly, almost everything from Villains month was immediately ignored - it was a terrible event. Darkseid was evil because he wasn't hugged enough as a child). Poison Ivy is still int he same continuity. Spider-man backhanded Mary-Jane across the room, and it's never been referenced again.
Comics continuity changes drastically all the time, most often when a new author takes over from the old. Supporting cast can immediately disappear and be replaced, love interests change, the heroes arc changes.
Same version, same hero, different flavor.
CoC2 has a bunch of different authors; and as has been noted by people, different authors have their own takes.
Not saying how this necessarily how it should be, but that's how it is. So it's easy ( for me) to treat it the same way.
When it comes to comics they explain everything as a brand new universe so Earth XX is completely different from XY so you have free reign to do whatever. Harley in injustice is a completely different character from her TAS counterpart and the new show she is in due to different writers writing different continuity and stories. CoC 2 should not do this because it is one continuing plot line and everyone has to be consistent or your story is just dog shit.