It's called the "Worlds Strongest Sword Slash"
No-name attacks dont mean anything just look at whitebeard
Yes, Hybrid Kaido with roger level haki cannot sleep Luffy in base sad day for yonkos fan and than zoro stops their attacks
Imagine Doing that to the Admirals he would die in 0.0 seconds
Zoro said he will become WSS and he is
Koby said he'll become admiral and him/luffy both agreed to fight each other once one becomes PK and other admiral
Oda would totally waste 20 years of buildup for a low-diff