I don't quife get that list. Is that supposed to be a ranking of the % each is likely to improve? Because it's weird not to have Powless on there when he's still showing an upward arc in his performance and already has shown he can win. Whereas Simmons didn't look any better in Strade this year than last year, and that's supposed to be the race best suited to him.Another awesome ride for him!
Ceiling wise I'd go with
3 ) Simmons
4 ) Ricitello
6 ) Kuss
I get where you have Kuss, since we know what he can do and what his ceiling is. Although you could argue that the others haven't won GT stages or been at the pointy end of the race in critical Tour stages, the others haven't reached his heights.