A much, much superior version of Luffy in Kaido couldn't even neg a half dead, 30+ bones broken Zoro and got his ass permanently scarred before Zoro crumbled.
In chapter 1010, Luffy sent Kaido flying and the level of injury is literally unknown but Kaido barely looked fazed. Was literally similar damage output to something like Red Rocc. Obviously, this was in base so that's impressive, but don't overwank lol. That version of Luffy was trashed mid-diff by Kaido in less than 20 minutes.