Some facts for the people who are still deluded.
Fact 1. One Piece is a "shonen" and the story revolves around Luffy.
Fact 2. Saturn > Kizaru, he is the Highest in the World Government, above admirals.
Fact 3. Luffy is the Warrior of Liberation, he frees slaves from their oppression. Kuma is a slave, Saturn is his oppressor.
Fact 4. Egghead, like any arc, follows the "damsel in distress" narrative structure. Kuma and Bonney are like Kyros and Rebecca in Dressrosa. Kizaru parallels Fujitora. Luffy will defeat Saturn like he defeated Doflamingo. It won't be Kuma, it won't be Bonney and Luffy won't defeat Kizaru.
Fact 5. Luffy will definitely be the one to defeat Saturn.
Fact 6. Oda is not crazy enough to make Luffy defeat both Saturn and Kizaru.
Fact 7. Kizaru is conflicted, he is about to break down.
Fact 8. Luffy has a right hand and a whole crew that are waiting to do something this arc.
Fact 9. Egghead arc is perfectly mirroring Sabaody so far. In Sabaody, Luffy punched a celestial and Kuma freed him with his hands of liberation. In Egghead, Kuma punched a celestial and Luffy will free him, the warrior of liberation. In Sabaody, Kizaru knocked out Zoro.
Now put these facts together and use your brain for a second.