You dont think Ray was using ACoC btw?
It sure makes no sense to use a +500 chapter fight as reference whether some characters went more serious or not.
We can't even tell whether Ray or Kiz used hardening.
Such Haki concepts weren't even a thing in MF. Forget all that stuff about ACoA and ACoC.
We only got some glimpses of Haki feats and it was just a pure chaos.
But I have to say it does make Ray look very good in comparison. Kiz was actually pissed he couldn't catch Rayleigh after all that shit.