While I agree with you for the most part, I think that sharing a body with one-tailed beast & all nine (technically somewhere between 7 & 8 in this case) are two different ball games. Yes he is weak minded but even before this boost I put him over Orochimaru due to the fact that he accomplished so much in so little time while almost eclipsing the latter in power.
Madara & Itachi are mentally on another level.
Sasuke? Impressive at times but lacks something that would put him in their league.
Sasuke is a Genius with E.M.S at 16 years old, he in his own league.
Everyone wanted Sasuke because he the key to all jutsu, so don't forget that, because it's about to play out soon in the manga. Sasuke was able to reverse a genius ninja like Oroachimaru ritual jutsu and now have Oroachimaru as one of his follower. The 9 tail fox already said to Sasuke "that he having seen eye's chakra prowess like that since Madara and didn't know someone could just shut down his power" and Sasuke only had normal Sharringan at the time, while Madara had E.M.S when he control the 9 tail fox(forget Tobi Obito).
So stop hating on Sasuke because he is clearly top 4 in the the first or second most powerful clan in Narutoverse ever(with Madara, Itachi, Shushj) and on his way to being a true boss at 16 years old.
Also Tobi Obito Uchiha will never be on the level of Oroachimaru, when it come to genius and villian(the guy just couldn't beat or out think Kakashi one on one two chapter ago, what you and all the other Tobi Obito Uchiha Balls Boys have Amnesia), Tobi Obito Uchiha been a tool for Madara plan that Madara map out for years and with all Madara knowledge, Tobi Obito isn't even a better villian than Kabuto, so get real dude. Don't come back with Tobi Obito Uchiha is better than Kabuto, because Kabuto got beat by a Edo Itachi, who pull out a unseen jutsu to beat him. Tobi Obito just got beating into the ground by Kakashi like always(I love Kakashi but he is nowhere near a Itachi or Edo Itachi level). Some idiotic text on this forum, that Tobi Obito said that he was a shell of himself, truly meaning himself as Obito, like he ever was more powerful than what he was at the time. No he meant the true Madara(to have a excuse before people wonder why he so weak if he really is Madara who was like a god of ninja's).
If genius like Sasuke or Itachi was giving all that Knowledge from Madara, they would had been 2 time better than him in 2 years(Itachi truly believe that him and Sasuke could surpass Madara with E.M.S, because he was in history a loser compare to the First Hokage and they could surpass the first as well). Madara had to find a dumb, weak, garbage Uchiha that had no chance to ever surpass him as a genius ninja(that Why Madara have 101 trump cards for Tobi Obito, just in case he get above himself, there is no trump cards for Uchiha's like Madara, Itachi, Shushi or Sasuke if they became or become the ten tail Juubi Jinchuuriki, you just have to bow down and kiss the ring).