Agree. McNulty seems to have all the tools.Of course he's got more upside than Kuss.
At McNulty's age Kuss biggest result was winning a stage in the Tour de Beauce. He didn't ride a convincing GT until he was 25.
And McNulty is a much more complete rider anyway: he's a great TTer, can climb, he's a great descender/bike handler (as proven in last year's Giro di Sicilia) and packs a decent sprint. Kuss is as monodimensional as they come.
By the same token Kuss ought to work on his TT. He's the rare American for whom it's not a strength. To be fair I'm not sure how many tts he's done with a race on the line, either so he might be pretty good.