That's not the same thing lol
Zoro's "canon" is like a wet fart compared to Rock's shockwave blunt force attacks
And it's clear rocks do not care about swordsmanship or whatever. He just using a sword as a blunt force instrument. Thats major sword disrespect.
Sadly, we will have to fire Rocks from the swordsman group and confiscate his swordsmanship license