~Snip~
You do not have to compare Benzema situation to Arda, Benzema played regular even when Ronaldo was in the club. They also played both of them in Champions league games. But Arda has not been given a chance to prove himself, not even in league cup matches. He has to be given time in the league cup game, or he should be loan out, Arda is too good to be seated on the bench every week.
I can't say that his decision to move to Real Madrid was the right one, in my opinion, if the reason for moving to Real Madrid was to win titles, then he can get everything there, but if he wants to improve his quality, Real Madrid is not the right place for him. So far, Arda has spent more time on the bench than getting the chance to play, even when Real Madrid beat Girona he was not played by Ancelotti, even though his family came to the Santiago Bernabeu to watch Arda in action on the field.