The Kayn overview stats look funny from what I have seen on the page detailing his playstyle
I'm stupid and can't get the picture up, but in my client the overview gives him one bar in utility and nothing else, and it says that most of his damage comes from autos. I might have gotten the wrong impression on whether or not his damage output is from autos or spells, but I know he should have more bars in his damage and mobility indicator.