Honestly, you'd be surprised how Egghead is perfectly mirroring Sabaody
It's just so perfect that it kinda made me believe so and if Luffy is going to take down Saturn, why wouldn't Zoro finish Kizaru off at least?
Now as I said, there is no indication for that yet, it's merely based on Sabaody mirroring
Except Zoro isnt strong enough to beat a top tier 1v1 yet
He simply can't
He will also be damaged when he fights Kizaru
Weakened Kizaru > weakened zoro
Oda didn't even allow him to dominate or beat Kaku nor did he dominate Lucci, what tells you he will make him beat an admiral?
If he beats an admiral, he won't fight shiryu next
We know shiryu is his next major fight ...Admirals/gorosei at eos only