As it Luffy, which is why it is as most, since Luffy has amps on top of his base that he starts with (such as advanced Haki) meaning the gap will never be more than that.
He's turn Gear 5 if Zeldris pushes him to use it. It's up to you to argue if he can. ON definitely would prompt a transformation.
Ah, I forgot to equalize speed. They both have multipliers right? That was the main reason I used the versions in the OP
Would they be able to deal significant damage to Luffy or would they just
morph his rubbery body? Luffy can also turn them to rubber himself to avoid taking a lot of damage.
Luffy
explicitly is not touching them.
Luffy's own heat resistance scales far above natural lightning heat as well, so regardless it wouldn't harm Luffy majorly.
He put Merlin's soul to sleep? Luffy has a layered resistance to this.