After writing this I’ve kinda come to realize how much headcanon you use in your arguments. Not just here but like in almost every argument you have. I don’t know if its cause you’re baiting or cause you genuinely just don’t know a lot of stuff, but regardless you are the headcanon king. I don’t think I wanna argue beyond this, it feels like we’re talking about 2 entirely different settings for half of this.
Cool headcanon, unfortunately from what little we’ve seen and what more we’ve read we know that Wotan is in fact an actually powerful individual. If you want I will find the sources to back me up but really most people already know this. Even if there is room for doubt on his strength everything you said there regarding his strength is completely made up by you.
I will put this though cause this does objectively mean that your headcanon about the wood curse being automatically weak is untrue
I swear to God if you try to twist then in a way that makes it sound like it means something entirely different then the obvious I’m gonna lose it 
Simply saying this doesn’t really prove anything. Sure PK got a lucky break but you’re acting like he did no training and never got stronger from point a to b, and that he was just already that way from the get go. Which is objectively untrue. If you didn’t mean that then you worded it horribly.
This is an entirely arbitrary and headcanoned limit. We literally have a statement from Vetex stating weapon/fighting style users can be between top 15-25.
This would not be possible if training meant nothing. They straight up shouldn’t be able to be stronger than any magic, curse, or spirit weapon user if training was just completely worthless in the face of raw talent. Not to mention since non-magic users can reach up to top 15 in the verse than obviously anyone born with magic and training can reach beyond that and well within that arbitrary top 25 you brought up. The people within the top 25 are not so inherently powerful that they are completely secure from anyone below them.