Stacking their peak forms next to each other is almost like comparing two different kinds of natural disasters — both devastating, but in different flavors.
At the end of 'Naruto Shippuden' Naruto's strength is defined by raw, enormous chakra reserves thanks to Kurama, Six Paths Sage power, ridiculous stamina, and that signature durability and healing that keeps him in fights longer than almost anyone. He brings overwhelming area denial and brute-force techniques like massive Rasengan variants, and his sensory and cooperative dynamics with tailed beasts make him a walking arsenal. Sasuke, on the other hand, favors surgical precision: Eternal Mangekyō Sharingan plus a Rinnegan grants him ocular supremacy — genjutsu, Amaterasu, Susanoo for brutal offense and defense, and space–time techniques (Amenotejikara) for battlefield control and mobility.
If you reduce it to who’s stronger, narrative-wise they’re written as near-equals at their final clash; practically, Naruto has the edge in sustained, brute-force endurance and healing, while Sasuke wins in tactical versatility, range, and single-strike lethality. In later material like 'Boruto' Naruto briefly gets Baryon Mode, a crazy spike that sacrifices Kurama to boost him beyond Sasuke temporarily, which shows how their power relationship can swing depending on context. Personally, I love that neither is a clear out-and-out superior — it feels balanced and true to their characters.