A world class team on paper? I have to beg to differ with you on that. This isn't Football Manager or Fifa where players are governed by a numerical rating. Unless you're talking about a bunch of names looking nice next to each other when written down on a piece of paper, which means absolutely dick all.
We have no player who is truly world-class in our midfield. Who in our midfield do you consider world-class because I don't consider any of them on that level. Diego is probably the best midfielder we have and he has a lot to prove before he can be considered world class. Just because we paid a lot for him doesn't make him wc. Defenders, Chiellini and Buffon. That's it. Forwards, two fallen gods and two obscurities.
The worst part of it all though is that we have the foundations for a WC defense with Gigi and Giorgio yet the directors can't see this and instead of spending 20m and 25m on a top class full back and center back we got Amauri and Filipe Melo.