Kizaru is so goated for this.
A top tier, living legend, appears out of nowhere to interfere and he could not give a single fuck. Not an even expression of surprise.
He even ignores him right in his face, continuing to chase the SHs.
And then when Rayleigh continued to interfere he decided to fight him instead of calling it a day like most top tiers do when another top tier appears outside of their agenda.
Did something similar with WB, ignored him right in his face
then WB attacks him, Kizaru says bet and sons WB.
Then there's the scene of him casually implying he'll go stop 2 Yonkou.
It's really difficult to visualize this monster losing when he refuses to show any real concern in the most dangerous of situations. I guess it makes sense when you have the most OP devil fruit in the verse, he can prob escape any situation any time he wants in the worst case.
I'm not even fully convinced there's a single character stronger than Kizaru. Just that he's too lazy to fully commit to a cause or care, he just tries to fill the minimum requirements of his job.