TBH I don't get people calling Zoro vs Lucci a one shot, they were clashing for like 10+ chapters with both fighters visibly wounded from fighting him.
Did it with Killer, Apoo in Wano. Random clashing isnt worth much, Zoro could end the fight whenever he wanted to - thats the key takeaway here.
And he does so, with a single move & not taking any damage himself.