This is ridiculous, man.
It's pretty clear Luffy's going to fight Saturn. No matter how short the fight is, it's gonna happen.
This always happens. Luffy fights one villain, who he beats relatively easy with his new/most powerful form after being pushed/matched in his other form(s), then he goes on to fight another one, the head honcho, in said form again and has a harder time defeating them but still wins in the end.
This happens frequently.
He did it with Blueno and Lucci, for example.
Though I think he'll beat Saturn a little bit easier than he beat Lucci in Enies Lobby, but we'll see.
In any case, I'm certain Luffy's fighting him, there's no reason for them to constantly talk about Nika saving them and Bonney losing faith in him if Luffy's going to fight Kizaru and let someone else fight Saturn.
It's unfathomably shit writing, and I can't understand how anyone actually thinks that'd happen.
Not to mention, it seems like Kizaru is only just now able to move enough to slump himself against the wall, I doubt he'd going to be able to move well enough to fight Luffy in enough time.
We also don't know what's happening with the other Straw Hats, especially Zoro, who could finish Lucci off at any moment and come down to help along with the other members that are currently missing.
So I'd say you should just wait for the next chapter, cause right now it really seems like this is just going to be a 1v1 between Luffy and Saturn.