Explain why Luffy's clothes, scar and face return moments later and he's completely fine? It's because it's his own fucking gag power you dumbass, just like when his eyes pop out of his head
We don't know that it's ACoC first of all, and no, it's nothing even close to Shanks' feat, Luffy is completely fine and didn't react even 1/10th the way Ryokugyu did.