I don't think that 2011 comprehension is fair, too. In 2011 Contador clearly was a huge step above all other contenders already before the start of the Giro. Menchov was uncertain to be in good form and the drop to Scarponi and Nibali was big unless Nibali's lucky Vuelta win. Anton was a man to watch out for back then, but wasn't focused on a possible overall victory.
This year you've got the runner up, white jersey and mountains jersey winner of Le Tour and okay there's a high chance, Quintana will step up into a dominating role this Giro. But on paper, you also have last years Giro runner up Uran, plus 2012 Giro/Vuelta runner up Purito, plus 2011 TdF winner and 2013 Giro 3rd Evans , plus upcoming grand tour contender Porte. Maybe Horner as current Vuelta champ will join too .... That are 5 or 6 on paper equal top guys fighting for the victory!
Of the top stars there are just Froome & Nibali missing, as Schleck and VdB have to proof their shape again, yet.
The last time the giro had such a strong field in the top was 2009 with Sastre-Pellizotti-Menchov-Di Luca plus Basso and Armstrong comeback. And 2005 with Cunego-Honchar-Simoni-Basso-Cioni/Garzelli, Savoldelli and later on Di Luca and Rujano taking over.