The whole point to revert the infinite state into finite only applies for like negating Otto's immortality in the first place through Imaginary Renormalization (So the entire thing technically don't even matter, since that's not even what Otto is scaled off), but the second one isn't just about their ability to affect the entire planet in an instant and whatnot but rather Prometheus was talking about False God Otto's power itself which is comparable to Herrscher of the End, Dr. MEI herself stated that this "Otto" isn't a normal person because Prometheus found its energy spike to be comparable to HotE —
Before all this, they were talking about reconnecting the bubble universe to an Imaginary ending which is when a Husk existed in the Sea of Quanta,
Prometheus said to imagine fighting against False God Otto to
Kiana during the process against the complete existence of the Husk
False God Otto, simply put upscales above these 3 Husks that's why
Dr. MEI even acknowledged Otto even if Dr. MEI herself know nothing about him. Plus, if we would have Durandal's feat as 1-B for doing this and Herrscher of Finality who also does the same by connecting a bubble world to the Imaginary Tree,
with the requirement being that there must be an anchor point that transcends all dimensions or being completely independent from proper worlds, something Kiana is only able to do
Brief description about the Husks themselves would be that they're the first entities to connect to the Imaginary Tree, I feel like this is just how their powers are if anything which then could be scaled to their statistics because as you know it, this happened in Chapter 32 whilst False God Otto is like 4-5 chapters before that