Cousins has proven that he can play very well at an NBA level already, and he is only going into his second season at 20 years old. Kanter hasn't played ball in a while, I think that based on that it would be really hard to take Enes over Cousins.
Still, Cousins has the immaturity and lack of work ethic that will render all of that talent useless. You really have to question his commitment to the game and mental toughness. Kanter might not have the raw talent, but he is clearly a very hard worker and has a natural enthusiasm for the game.
I'll say this much, it will be much more enjoyable to root/cheer for Kanter than it would be for Cousins.
He shot 43% from the field and he has a 9'5 standing reach. Let's not call playing very well.