Luffy used G5 and turned into a mummy after. It's the equivalent of Kaido going full Magma Dragon from the get-go.
And let's be honest. If Zoro used KoH on Lucci or Kaku from the start, he would get clowned to hell and back.
Besides, you're somehow judging Luffy vs. Lucci on the actual outcome of the battle, which is the sensible option, but then you're power-scaling Zoro vs. Lucci on the matchup by itself. How does that make any sense lmao