It's fucking happening

B+ ------> C+
Ill start with stating that I'm 100% aware that I will not convince anyone with this, and by the same coin, I will not be convinced this mon is this high, because I have used every single set possible (Eveeto si estas leyendo esto te quiero mucho y soy fan, pero tu set de spedef apesta a meado de abuela, esta mierda no tankea ni un CB woodhammer de rilla y eso que es quad), and it has vastly underperformed compared to the praises this thing gets. With the release of Skarmory, the steel bird has now been mostly outclassed, because they share the same typing and strats to deal with the meta at large, but skarm does these things better because of his higher physical defense, sturdy (which means, if played perfectly, you can potentially avoid OHKOs) Whirlwind and hazards, which means skarm is generally more active in battle, while corv can be easily overwhelmed by even strong physical attacks, not to mention special attacks and other means of damage.
There are 2 things that keep Corviknight afloat, which are Defog, which is a novelty move at its finest, it's only truly seen on stall or fat balance at high level and most players straight up don't run it, this is because the existence of gholdengo, and while gholdengo IS on a downturn as the time I'm writing this posts, It's still strong, and while not being in every single team, its presence in the meta It's so oppressing that smart people will not run the risk of getting blocked unless your confident in that you can out pressured somehow
The other thing keeping Corviknight in OU is access to U-turn, which is a good tool to have to keep momentum, but if its only real role is tank 1 / 2 hits and peace out then I think this has not the material of a B+ mon. Because that's what it realistically does, it clicks ID 2 times during a match, then pivots out or roost and then pivots out. I get not all mons have to be flashy, but this is not a support pillar, it's bad. It doesn't matter if you have all these "on paper" advantages when in actual combat you can't pull none of these things
Everyone who knows me knows I fucking hate this ugly ass mothefucking garbage excuse of a mon, and this has been a long time coming
EDIT: btw I forgot to say this, but I'm only ranking this thing C+ instead of C- because of U-turn and I'm feeling charitable

A -----> A-
Speaking of Skarm, I also think skarm is overrated, but for different reasons, don't get me wrong, skarm IS an actual good mon that can and will put progress for you. But when people simp for corviknight for so much, when you see an actual upgrade, It's normal to just go balistic. Its lower spedef than corv means that sometimes you can't even pull the "I can tank this one hit" card, and while Skarm is less passive, it is still exploitable. And the lack of U-turn can hurt a bit when building, meaning it's more restricted to defensive play styles instead of corvs range (which is from stall to BO in paper), but the things skarm can do, it does them better than corv. Which is why im only doing a small rank. Skarm IS what people think corv trully is

New ----> C-
It's okay I guess, hex + toxic / confusion spam and parting shot is cute and annoying, but it cannot touch any steels outside dengo. 88 speed is good enough in very specific scenarios. This thing is gonna be useful on 1 or 2 stall teams and that's it

UR -----> C
This one is not a personal thing, I saw a guy making a small wave with this thing. Based on his efforts, it essentially checks gholdengo, gambit, meow, weavile, and can yolo himself vs Volcarona and Roaring Moon, which is a small list, but it has some important mons, so I'd say to let it pass the quality check. His RMT does not have replays tho, so I understand if you people are hestitant about it

-> C+ / C
Agreed with this post, Blaziken is just outclassed in general by Gouging Fire when it comes to fire sweepers in sun

from B+ to B-
Knock Off and U-turn is cool on a regen mon and all that, but when was the last time has someone run into this on ladder, I swear to god this thing is nowhere to be seen, and like, sure sounds usable, but Its nowhere near B+ imo

from B to B+
NOW HEAR ME OUT, this thing is underrated, I know gliscor and kyurem shit all over it, but it's fucking zapdos, who can reliably get lucky para into moon? zapdos, who can get suicide lucky para into iron boulder? zapdos, who can pack weather ball to lure iron threads in rain as well as gliscor with hail, zapdos, who can force meowscarada into using tera electric 100% of the time just to deal with your ass, fucking zapdos, and keep in mind most meows do not run tera electric, the gliscor meta has pushed a lot of mons who zapdos deals with on the forefront, give it another try, embrace the hax, let luck smile at you and be sure to smile back
and that's it, now give me hahas and negative dehumanizing comments