Sasuke not only was able to defeat Naruto, but Sasuke is smarter when fighting and has もっと見る diverse jutsus is stronger and is faster, he has full control over his curse mark now, so the fight should be easier for Sasuke, NARUTO -ナルト- isnt a custom to Sage mode yat nor can he fully contol the demon 狐, フォックス but his jutsus are all close range so if the fight is long range Sasuke would easily win but if its close range it might be close!!!!