Oh look, another Sasuke bash thread from this clown. Orochimaru didn't give a single **** about this guy or his Sharingan. Itachi let him live, otherwise, he turned his posterior into into finely sliced confetti for three days. He didn't even awake his Sharingan, as you need Uchiha chakra for it. He performed better in war because of Kurama's chakra charity.
He's an Uchiha lapdog, who needed another free charity from an Uchiha from beyond the grave to even matter on the battlefield. Back to the dog house of irrelevancy for him.