Don't forget as well, that for a lot of his life Sasuke had a clan of geniuses to teach him while Naruto had no one which is because of Kurama, even when he became a genin, Kakashi played favourites with Sasuke. If someone devoted time to training him like Fugaku with Sasuke imagine how much better he could be. Odds are he would have mastered even more jutsu as Kurama makes his chakra control worse and he would probably be able to do a one handed rasengan if it wasn't there.
Kurama has also been a hindrance to him and his base chakra would be higher without the ninetails. Even with that limitation he has four times the chakra reserve of a powerful ninja like Kakashi.
Naruto could spam hundreds of shadow clones( a B-rank technique) at twelve without much help from most of his academy instructors, chakra develops as you get older and more experienced and he was able do that minutes after learning he even had the Kyuubi. The Kyuubi saw he was weak and tried to take over him during the training, that had nothing to do with him dying if Kurama wasn't involved, you just arsepulled that so Kurama didn't really have anything to do with him learning RS
Against Gaara, Naruto summoned Gamabunta, with his own chakra, not the ninetails and senjutsu is possible for anyone as long as you have large chakra reserves and a summoning contract, both of which Naruto has without the ninetails and perfecting its was even harder for him as he can't fuse with the sage toads.
I'm gonna put this thread down to ignorance rather than being a Naruto hater as you don't seem the type, Naruto would be very strong without the Kyuubi and Kurama has hindered Naruto in a number of ways too. Please think before posting threads like these, it'll save you a lot of trouble