Congratulations, you just put Kizaru between a yonko and a yonko commander, like we were saying during this whole time.
I didn't do much, is Oda the is demonstrating that some brained topics and ideas here are really just like.
About the rest, Kizaru, being an admiral, is fully on par with an Emperor. Imagine Luffy going like this:
against someone who is not as strong an Emperor and was not even using 100%. That would be shameful, and Luffy now is an Emperor himself. In fact, he has even beaten Kaido.