Well Andy has class, always has. With form and an ITT light parcours he could win a GT (on the road). A GT like the Vuelta most likely.
Sagan has class but isn't likely to ever win a GT, same for Fabu, Gilbert, etc. Many riders with class that will never win a GT but shine in their area of expertise.
Even Lance (gag) had class from day one, just not GT class, one day class.
Bertie has always had class, the question is will he find the form and recover from his injuries. And yes if he loses it won't be because he was outclassed by whoever beats him, simply that his class couldn't overcome the current obstacles. Sh*t happens