I think Naruto is very strong. Remember in the beggining of naruto when he could do clone technique right. After he got mad when his teacher was about to die he broke the seal on his body. This cause naruto's chakra to flow regularly. Because the seal seal kyubi's chakra and cause naruto's chakra to not flow right so he couldn't really control it. Lol thats all i have to say. Even without kyubi naruto still learns hot moves in the future.

Sasuke , Rock lee, Neji , shikamaru, kid with the dog never could remember your name., and even Fat Choji later on your the man all of yall.