In fairness to him, he was working as a domestique in all of those races and was quite often one of the last teammates around in the Vuelta mountain stages in what was his first GT. That's pretty good going for a kid.
I don't think he'll be in the Tour team, and I don't think he'll finish in the top 10 next year if he is, but I do think he has a better chance than most of those in the poll above. Martin is the only one in that list who is clearly a better climber and as has been said repeatedly in this thread, the parcours stops him from having any chance.
(Le Mevel is also a better climber as of this year, but next year Talansky is a year more developed while Le Mevel is just a year older.)