Obviously, if he didn't have the kyuubi, he would've died against mizuki, and even there iruka saved him. Look at his father, he wasn't from a string clan and yet became Hokage, kishi screwed with Naruto
Take away Kyuubi's chakra and Nature's chakra (not including ashura's chakra, power-up without doing anything) which both are borrowed then Naruto wouldn't defeat a regular jonin (imagine Zabuza). While Sasuke was made to be overpowered, Naruto should be the one if you compare families.
Now if...
Take away Kyuubi's chakra and Nature's chakra which both are borrowed then Naruto wouldn't defeat a regular jonin (imagine Zabuza). While Sasuke was made to be overpowered, Naruto should be the one if you compare families.
Now if Naruto wasn't born with Kyuubi's chakra and was properly trained...