How do I know? Because Kishimoto said they are equal. And Sasuke may seem nerfed but he's actually at his peak strength because he cannot use the other six paths of the rinnegan. Naruto however has lots of abilities and techniques to unlock because of the bijuus inside of him.
But they are still equal.
(Technically naruto is stronger)
But they are still equal.
(Technically naruto is stronger)