If law could get a power jump after his doflamingo fight without any reasoning, so can kid. I care about potrayal and kid's potrayal is top notch. You dispute kid will have advanced coc in the future ?
Everyone can get a power jump. And I’m quite honest, I don’t care about portrayal. A few examples why
Luffy defeats Doffy, than Cracker and Kata. Comes to wano, trains gets stronger and than fights Ulti and struggles against her to the point where he wanted to use G4
King fought Marco, someone who fought kizaru quite evenly. Someone who toyed with Zoro before he activated his AdCoC and yet he suddenly gets begged by Greenbull
Portrayal in manga changes depending on the situation and what they want to “portray”
Kidd is someone who got beating by Kaido easily and someone who managed to land attacks on Big mom only when Law has weakened her first. We have never seen him use any kind of haki and his attacks are not that effective against Luffy. Even his awakening can’t do much on Luffy, as Luffy is rubber and won’t get crushed. His bones will not break like big moms. Luffy can use FS + AdCoC in G4 snakeman and one shot Kidd everytime. Nothing Lidd can do about it. These logically speaking what would happen if Luffy was a logical fighter and wouldn’t just mess around.
If you take their current abilities into consideration(no speculations) Luffy has more AP, higher speed, more stamina, and more versatility than Kidd and Law. He outclassed them by far.