There was no sneak attack. Shanks jumped in front of Kid and Kid even said « red hair » before Shanks used Kamusari. Did Kaido sneak attack Luffy in part 1 because he failed to react to Thunder Bagua ?
Does zoro cut an opponent every time he swings his sword at them? The question you should be asking yourself is this …. Zoro , Roger and shanks all coat their swords in Adv Coc haki and swing it . Why is only zoro a swordsman in my eyes and Roger and shanks I have to wait to see more ???? I’ll give you the answer to that right now buddy …..because you’re coping