You might be right Cpt_Reina but to be fair about Mancini, Zabaleta is a fine player himself and some Man City fans on here did say his form made him undroppable for the last few games. I personally thought Richards was playing really this season and felt Capello should have used him more than he did but yeah, maybe he did have valid concerns.
As for Roy, well, it's Roy. Given that he picked Jones and would have picked Walker, it's difficult to see his thinking as Richards is comfortably better than both (although Jones' versatility was mentioned by Roy, still performing average in every position isn't necessarily a good thing).