Conically speaking Sasuke has less Muscle then Naruto having one less arm. Muscle in terms of mass and tissue not in terms of raw power and or strength derived from abilities just in case you try to bring that in.Wrong, Naruto is skinnier than Sasuke canonically. Why do you think he always wore a long sleeve?
Funny how Sasuke has more muscle when Naruto has the "strong body" portion of Hagoromo's chakra.
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