Renember he was able to suppress the Kyubi chakra when he entered Naruto's mind the first time they met after the timeskip. Now that he has the Eternal Mangekyou Sharingan that ability should kind of be enforced. Also note Madara's quote today, not even the bijuus can stand up against the Susanoo, and even though his Susanoo is probably far beyond Sasuke's one, this is a nod of the upcoming fight that we will see.

Renember he was able to suppress the Kyubi chakra when he entered Naruto's mind the first time they met after the timeskip. Now that he has the Eternal Mangekyou Sharingan that ability should kind of be enforced. Also note Madara's quote today, not even the bijuus can stand up against the Susanoo, and even though his Susanoo is probably far beyond Sasuke's one, this is a nod of the upcoming fight that we will see.

no he said that the bijuus are the only one with comparable power to the susano'o perfect form also sasuke might have an advantage because suigetsu said he found something that will help sasuke win the war. Sasuke was only able to suppress the kyuubi's chakra because naruto didn't have control of it.

Parece que a versão que eu li foi mal traduzida. Então, a luta vai ser muito justo, eu acho. E o que Suigetsu encontrei, eu realmente duvido que ele iria ajudar Sasuke em tudo, ele nunca disse nada sobre isso. E você está certo no seu ponto sobre Sasuke dominando a kyubi, mas deve haver algo de especial o Sharingan pode fazer contra os animais com cauda.