Winners:
I think Froome should be considered one as his performances this year prove he should lead Sky at the TDF.
Wiggins- won a great amount of races.
Gilbert- he got his rainbow wish, that saved his whole season.
Valverde- rode superbly throughout the year.
Vino- won Olympic gold.
Gerrans- won M-SR.
Boonen- dominated.
Sagan- owned.
Hesedal- won a GT.
Greipel in my view also ends the season as a winner. Sure he only rode 1 GT but he got 3 stages there. Also nabbed wins throughout the season.
Young people who had good seasons include

inot, TJVG, Demare, Quintana, Uran/Henao, Moser and Degenkolb.
Losers:
Evans- though it pains me to say it.
Hushovd- had a season he would like to forget.
Cancellara- crashed at his important races.
Contador- would be considered as a loser by everyone for losing his titles but he won the Vuelta/ dove deeper into La Florecitas' heart.
Basso- he rode well to support Nibali but failed at the Giro/ made me fail in the CQ game.
Frank/ Andy- no GT win for them except for the 2010 TDF. One facing a possible ban and the other a wasted season.