how many characters has he ever soloed in his life
almost killed by raikage, orochimaru was sick, Itachi was already dying, killer bee soloed him physically and mentally, struggled with Danzo
in part 1 he beat Naruto but didn't solo him, Sasuke gave his all, he controlled the bijuus but still didn't have Victory
after Itachi there is no one else Sasuke fought one on one without any help
but if this thread is just for fun I pick Sakura