Is naruto stronger than Sasuke without Kurama

No, Naruto is not that strong without Kurama. Sasuke and naruto are the same. Kurama plays a crucial role in Naruto’s upbringing.
We need to compare naruto with his full power.
Naruto has jujitsu skills. He can still fight but with less power. Naruto masters the Shadow clone technique, Wind Style Rasen Shuriken and Rasengan. Besides, naruto has god-level chakra reserves. Read Pokemon scarlet and violet.