Just won't keep it long... Because you never learn!!!
Either Sasuke shows his full abilities or not, throughout the series Naruto was above Sasuke and Sasuke was keeping up with him(only diversion is Shippuden start till Naruto learned FRS)... But in any of their encounter Sasuke prevailed, only reason is that Sasuke always went all out on him in one way or other...
And the only thing that kept Naruto at the bay was his resolve not to hurt Sasuke...
Otherwise, w/o going all out, Naruto always had the potential to defeat Sasuke...
And currently, even if Sasuke reaches Madara's level of EMS, he lacks practice and experience... which will be the most key factor in their battle... On the other hand, Naruto is perfecting his BM every minute, every second...
And IF Naruto fight with Sasuke till death, he would definitely win low-mid diff...
And that's what makes me believe that why Kishi turned Sasuke to good side...
Think about it and don't hate me... I've seen you trolling for a very long time!!!U_U