i guess orochimaru was training sasuke.! and also he had the help of tobi while fighting danzo
karin,suigetsu,and jugo while fighting killer bee..!!
but naruto faced all the six pain's in solo combat.!!
naruto >> sasuke.!
sasuke had oro
naruto had jiraiya, killer bee, and Pa
sasuke had tobi's help while fighting danzo true.
naruto had jiraiya's intel, and hinata and an army of toads, and kurama, and his father, and deva was restricted to start the fight
Against kakuzu, naruto had kakashi, Ino-shika-cho, and yamato and their collective intel
against the third raikage, naruto had an alliance, rubber guy's intel, the 8 tails intel
against kurama, naruto had killer bee, and kushina
against muu, naruto had the element of surprise and gaara
against the bijuu, naruto had killer bee and kakashi and might gai
against tobi, naruto had the only way to hit tobi (kakashi)
god forbid sasuke uses two low jonin level ninja and a medic every once in a while with no intel