
The Sasuke vs. Naruto argument went on for fifteen long years while the Naruto series progressed. Ultimately, the show called it a tie. Uchiha blood vs. Uzamaki and Nine-Tails powers' were matched.
However, when Boruto came back to their stories, things seemed to have changed. While both men are powerful, Naruto has been preparing for Hokage and working tirelessly on that dream.
Sasuke, on the other hand, was constantly on missions, training, and keeping his body in peak ninja shape. Naruto himself said he was getting rusty from being Hokage.
After all this time, it's very likely that Sasuke is now far more powerful than Naruto. All because one of them took a desk job.