I'll leave that up for
@T.D.A to decide
if he's correct then this distinction matters and the emphasis on skill that Viz makes on Mihawk's end by calling it superior to Shanks.. makes perfect sense..
So a Dai kengo class exists in OnePiece that are the so called pure swordman.. which Shanks isn't.. so the claim of zoro's dream being disserviced becuz Shanks being stronger than Mihawk doesn't stand if Shanks isn't even in the same class, rank, eloquence of swordsmanship as Mihawk whatever you wanna call ir
hence it debunks that Marines weren't only talking about superiority in skill like Viz translates it to be.