I was reading an article on Bobby Jullich's TT training sessions with the Schleck Bros & the question was put on the table: Can Andy challenge AC? Bobby said AC is just at "a different level" & Andy can only "limit" his losses to him. Basso, Wiggo, Gesink, Nibali & many others have the same answer as well: -Alberto is a level above everyone-
based on that, we might have to wait 5 years and hope for a young talent with the same skills to challenge him, because so far, the current candidates seem to fall short..... (I hope i'm wrong for the sake of cycling)