The mechanics are better for one
The whole, “I can eat the magic crystals that are not even fire but whatever, i need a power up and who cares” is CERTAINLY not comparable to what is happening right now with Luffy.
For example, Mr Morj predicted that this fight will be settled by Advanced CoC And NOT advanced COA about 30 chapters ago. He made this prediction at the same time as everything in the story was directly emphasizing COA.
The reasons he gave for this prediction were themes. Thats it. He simply said the themes of Wano do not support COA being the end all be all of this confrontation. The mere fact that underlying themes can acurately foreshadow this outcome even though Oda has spent 70 chapters directly telling is that COA is what we need is MILES above anything In Fairy tail.
So you can in fact plot out similarities in the general structure of the fights, but the Actual details in mechanics and execution are VASTLY different.
@kenedyfake