Who did Madrid have coming off the bench against Juve to save them? Chicharito - a player deemed surplus to us this season. The grass is not always greener. Barca in their recent history have had one of the greatest players and two of the best central midfielders of the generation playing behind him. However, even they looked wanting in games when some of their role players could not step up.
You come across as one of those that simply expect a world XI for every team and if they are not then they are just not good enough. When in truth great teams are made by a combination of great players and by role players such as the Busquets, Pedros and the likes. United's problem right now has not been the likes of Valencia does not belong but, more that the players we expect great things from have not delivered - the likes Rooney, RVP, Falcao, ADM. Valencia has done the job more or less that has been expected out of him. Which is why managers keep playing him.