How is it the two sides of the same coin? The chakra in this case is completely transformed into Raiton. Those were physical objects (chakra flesh in the case of Kurama and Chakra given a physical shape of an avatar in case of BM avatar), this one isn't. If it was the same feat, then why did Kurama claim that it wasn't? I mean, come the heck on, you are blatantly denying a statement from Kurama, when it wore PS as a garb twice. When it didn't state that it was the same thing, then why are you suggesting it? It's an argument with no basis in the manga as Kurama itself doesn't state so.
The argument starts from "since there is no Mezo," which means PS is being turned into one. ISO PS isn't a Mezo. I am scratching my head as to how these two even correlate.
It's kinda silly, because Sage's CT is the only one without a core like Sasuke's. And you are suggesting that it has nothing to do with skill, when Kurama stated that it does? All right.
Already explained it above, as PS has never housed (without merging) any raw chakra. Nor has it ever acted as a Mezo, which is what the mangaka wanted to portray that it isn't an ordinary feat.
It is the reverse of COAT, which is why it is a one of a kind feat.
Dude, you have some serious issues with your eyes. Serious ones.
And this has nothing to do with the thread I made. Furthermore, Sasuke didn't have Rinnegan at all then. And Kagutsuchi is an Ocular ability where Sasuke applies advanced "Shape Manipulation (that has nothing to do with auto-eye-modes)" to Amaterasu cast from the left eye and controlled with the right eye. We have known this since Chee's explanation. Even then, Tobirama (the smartest man in the manga) who studied countless Sharingans outright states in the Viz scan I posted that he had never seen anyone control it that perfectly. Chee also called him a "rare genius" on his control alone. Whoops, another slip, I see.
Bottom-line, Kagutsuchi has nothing to do with controlling Raiton with the eye. Care to point it out where Sharingan, magically, allows for the chakra control of any Ninjutsu bar the one used by the eye? Even then, as the mangaka states, it's entirely dependent upon the skill of the user? No one has over-rated Sauske. You are over-rating Naruto, as every single scan you have posted to sling dirt at Sasuke and exalt Naruto is misinterpreted, out of context or has nothing to do with the discussion. Naruto's CC isn't at Sasuke's level. It's canon manga logic, and no amount of fanboyish flip-flopping changes that.
As for understaing all chakra, then you just hacked your own foot off, along with you flimsy argument. As not only do you accept that he has no innate skill in CC (as the automatic mode aids him in that constantly), but him still asking and getting kneaded Bijuu chakra and not doing much by himself even after amassing CC experience of thousands upon thousands of clones with that "universal grasp of things" mode on, makes Naruto's skill so medicore that I am inclined to laugh at this whole thing. If that isn't talentless, then I don't know what is.