I think Valverde's season is a bit overrated. The start with the FW+LBL double and 3 stages in Catalunya was absolutely great. However after this, he didnt win one single stage in a tdf which had tons of stages he could have won and he only won one stage in the Vuelta, which also isnt really outstanding for a rider like him.
Tbh. he also finally got his tdf podium and the points jersey in the vuelta, but I'm not arguing that his season wasnt good, but that it isnt as great as many people say. Just as an example: Peter Sagan also has one very big one day race (WC RR), one vuelta stage, a gt points jersey and three more WT stages.
+Valverde: one more WT one day race, 3rd in the tdf, Trofeo Serra de Tramuntana, spanish champ and the WT
+Sagan: gc and 2 stages in california, his points jersey was the one from the tdf, points jersey tds, Slovakian champ.
Valverde probaly still had the better season because his "+wins" are definitely worth more (especially the WT and the tdf podium), BUT don't forget how many more races Sagan could have won without his bad luck and that hardly anyone says that Sagan is the rider of the year and still Sagan's and Valverde's seasons are comparable. IMO Valverde is still one of the best riders of the season about as good as Kristoff and Froome, maybe even the best one, but I remember that earlier this autumn, people said that if he had won the WC RR, it would be an almost perfect season, and that was a massive overrating (and looking at the poll which isnt close at all, I think many people still overrate it).
Ps: Voted for Sagan, because I hope he will get 2nd.