I agree that he seems the fastest sprinter after phillipsen at the moment. Very impressive. However I also have the feeling he is too bad with the hills to win one of the classics..There aren't 2 guys faster than him in a road sprint.
In a way it's sad that he got discovered this late, and also doesn't get a lot of GT chances. But I think there are still some years to come in his career, and I believe he will still add some important victories to his tally. A classic like Gent-Wevelgem should be possible too on a very good day.