Not in that specific interaction though. And if you're going to say he used Haki you'd have to apply the same to Vergo, but either way both had no visible indication they were using it
I’m not sure what specific interaction you’re talking about. You mean he wasn’t using DJ when his leg cracked?
When was there any visual indication of Sanji using CoA in the story? It literally never happened, to the point you have dummies arguing he can’t use hardening because they think it’s an advanced form of CoA.
As for Vergo, I don’t know whether he was using CoA, but you’re presenting a false dilemma. He was very durable and could use Tekkai. And if he was actually using haki, I don’t see any problem with that. Maybe he was, but that doesn’t change anything about Sanji using it or not.
Also Vergo isn't anywhere near Sasaki and WsW. WsW was able to pierce Jinbe's Armament and force him into winning via a rage amp
"Rage amp" lol. Reality is he was no match for a serious Jinbe and got obliterated, he did nothing that seemed impossible to do for someone like Vergo.
One-shot...
...is not the right word here.
Law did not deal any damage to Vergo as his separation technique doesnt deal any harm whatsoever. In fact, Vergo has shrugged off Law's named attack better than Big Mom.
He simply overestimated his own haki and thought he could prevent Law's ability head on instead of dodging.
Without that mistake, Vergo was likely above even Law's paygrade.
Also, I wouldnt brag about Sanjino being used as pinnbal by casual Calamities...
That’s… literally how his power works? His sword doesn’t deal damages when he uses it to slash his opponents, even if they’re fodders.
Reread Wano. Those who are "above Law’s paygrade" can’t even be cut by his ability, they force Law to try more lethal things like Gamma Knife, Takt and Awakening.
Why do you think Oda nerfed Law by having Vergo hold his heart hostage? Because he was otherwise no match for him.