No. MS technique means something unique. Enton is merely Amatersu manipulation, nothing more. Nothing contradicted the Databook, and if you're referring Sasuke's panel of Susanoo, you're misinterpreting it. VIZ translation uses content of ''third power'' referring to Susanoo. This means 2 other powers are needed to unlock the third power(Susanoo), and they are Amatersu and Tsukuyomi supported by Itachi and the Databook. Sasuke didn't contradict. He actually supported if you understand the context.But Enton is his second eye power. It was stated AND shown that he uses Amaterasu in one eye and controls it w/ Enton in the other. Susano'o's requirements of Tsukiyomi and Amaterasu were obviously retconned because later on in the manga it was just stated that you have to unlock power in both eyes.
I've seen people claim that the genjutsu he used on Bee was his Tsukiyomi, but if that's the case why didn't Sasuke unlock Susano'o there? The answer is simple: because it wasn't Tsukiyomi and he didn't unlock his second eye power. It wasn't until the 5 Kage Summit that Sasuke unlocked his second eye power (Enton) which then unlocked Susano'o (because he unlocked powers in both eyes).
It was Tsukuyomi. He felt pain in his eyes and the background of Genjutsu was dark like Itachi's. If it was normal Genjutsu, then no point in activating MS. Sasuke didn't awaken at that time, because he didn't the skill. Susanoo is rare. You cant awaken by the next day you activated MS.