You're wrong on some details. Plus I can give you facts on Itachi being stronger EVEN at not full power. I'm rather a Sasuke fan than Itachi, before you tell me your little "Itachi-fanboy comment".
1.- Sasuke's Amaterasu is the same as Itachi. It is actually Itachi's Amaterasu Sasuke is using.
2.- Sasuke's Susano'o is just the third phase. There are 4 phases of Susano'o so far. First one is skeleton. Second one is muscle tissue. Third one is skin. And fourth one is armor. Itachi's Susano'o is fully developed PLUS has the spiritual item Yata's Mirror, and the Totsuka Blade. Sasuke almost awakened the 4th phase, but his Mangekyou lost it's light.
Itachi's Susano'o:
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Sasuke's Susano'o:
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3.- As you said, Itachi's Tsukuyomi is much stronger. In Danzo and Sasuke's fight, Sasuke tried to use Tsukuyomi, but failed. His genjutsu was too weak.
In any way you see it, if Itachi was alive he would beat Sasuke. THOUGH, we are yet to see Sasuke's new form of his Mangekyou Sharingan, combined with Itachi's. Probably that'll make him as powerful as Itachi.