The issues here seem to be the following:
1) Should we keep and rewrite the second (currently removed) note that we just added to the Post-Flashpoint Superman page, and if so, in what way?
The notes about why he scales to the Forger/it not being and outlier, as well as the one for not being amped, can be there and unchanged. The reasoning for it not being 1-A should be something along the lines of "While technically still in the 6th Dimension, Superman and the Justice League members were still in a Multiverse, so their size and powers wouldn't be changed". This is pretty rough around the edges, but I hope my point in it is understood.
2) Since the World Forger's new multiverse was present within the 6th Dimension, does that mean that Superman almost punched him out at his "1-A" peak, or did the same 2-A standards apply as usual, since it was still a regular universe they were present in?
Yeah, it should be the 2-A standards. Like, DC's cosmology is High 1-A or something, and a Universe is in DC. Doesn't mean the Universe within it is the same dimensional tier. Although, I would like to hear out Green's argument for 1-A he apparently has heard of.
3) Since the World Forger's in-universe 2-A manifestation form might be downgraded to 2-C, should we do so with Superman as well, given that the multiverse in question only had 52 universes?
What suggests it was only 52 Universes? Isn't the DC Multiverse size still at 2-A here? But anyways, if World Forger is downgraded to 2-C, Superman scaling to him would only be 2-C, yes. So, we likely should wait for the Anti-Monitor downgrade threads and other threads to end before progressing here.
4) Or should we downgrade sundip Superman to Low 2-C, given that the editor said that he only destroyed a single universe, and the rest was a chain reaction? This would earn us a lot of attacks and slander from angry DC fanboys though.
I don't think the Editor's view is consistent with the story. As pointed out above,
the Forger returns unstable Universes to the forge, and Alpheus
says he was almost done, to the point
where he was swinging the anvil. Forger also specifically says
you destroyed it, so I don't think we can say it was a nonfeat like some suggested. However, if it is proven to be most likely Low 2-C (which I'm open to), other people's opinions shouldn't matter. It's a damned if you do, damned if you don't situation. I know people who think the feat isn't even Planetary, so they'd probably still be mad with a Low 2-C rating, just like how people think it's 1-A would. So, accuracy should definitely matter more, and if people offsite disagree, it really shouldn't matter.
TL;DR: I think it should still be 2-A, as Forger specifically says Superman destroyed it, and he only was using stable Universes. However, if it's proven otherwise, people's thoughts on it being downplay shouldn't matter. Him scaling to Alpheus should be fine, but we should wait for the Anti-Monitor thread to end before basing a decision on that. Lastly, the notes for it not being an outlier or being amped by things besides the suns can stay, but the one for it not being 1-A should be rewritten.
Sorry if this wasn't written very clearly, I was able to pop on here for a moment to make this commend. I'll be back in around an hour to say more/respond to things. Though, I do think the thread should be temporarily closed due to the Anti-Monitor thread going on.