He's a utility man, he can play in more than one position. No more, no less. That's why Benitez bought him in the first place. He's certainly not the messiah you make him about to be above - even Benitez himself has spoken more than once about Garcia's tendency to be wasteful.
Benitez has also questioned Xabi's ability from the dead ball, Sissoko's raw tackling and Crouch's all round game. It is a mark of his style.
Utility players do not score vital goals game ater game. Granted, he is a squad player, but after the defence and SG most players are under Rafa. He has been a *vital* element of Rafa's first two seasons.
At the match, in pubs, angry old purple faced moaning bastards give the player so much stick you'd think he was a total waste of a red shirt whilst clapping like trained seals whenever Warnock throws himself into a challenge that could break his leg (again).