You gotta give it to Oda, man.
Anticipating the coping scholars from the Godfy fandom, he went out of his way to make Luffy himself state he was in his PEAK condition and was 100% sure he couldn't lose TO ANYONE.
Much like when he made Luffy compare Sanji directly to Gaban when they met.
This author, when he deems worthy, will completely murder copium in its crib.