Board Thread:Theories and Speculation/@comment-38812954-20190831032416/@comment-9782468-20190918002731

Jimmy HE73 wrote: With that argument, you unconsciously admit that the attack I invented for sasuke would work and be effective. I'm gonna need you to do me a big ol favour and don't claim that I did things I didn't do.

Force is mass times acceleration, like I said. Well guess how much mass fire has?

About 4 times less than air. Meaning it'd be harder for Sasuke to put force behind his fire attack than it is for him to use just about any other technique. Normally this would be offset by the fact that fire also burns, but Amaterasu burns slow as heck.

Jimmy HE73 wrote: So they're both equal, but one just has more chakra. That is exactly correct. That's why Sasuke can't just try to wear Naruto down in a stamina battle. He has to fight much smarter and waste minimal chakra and effort.

And Sasuke is good at doing exactly that, so in terms of combat they're equal. In certain situations, Sasuke is better, but in others, Naruto is.