Luffy is defeating Saturn before other Gorosei land.
Maybe. But then he's gonna run away...
We will have to first see the summoning panels. Cause if Saturn already summoned them fully, then Saturn isn't getting beaten.
If Saturn just started the summoning and they will take time to get here, then I can see your scenario.
But from what we saw of Saturn himself teleporting to egghead, it seems instantaneous.
I really doubt goofy is gonna beat Saturn in that short a time.
And I really really super duper doubt that zoro would beat Kizaru in that short time when he hasn't even beaten Gucci yet lol.
Kizaru is not getting beaten this arc. As I've said since the start.
He's probably zoro's final war opponent.