At least i know, Chelsea fans are not happy with drogba. My observation was most of mourinho's acquisitions were failed to perform.
They are Drogba, Tiago, Jarosik, Kezman (this guy had just 1 goal in the penalty, total failure), and Fereira.
While ranieri's accusations shined. They are the rest of chelsea's squad including new stars Robben!, Cech!, Cole!.
IMO, doesnt have much difference between ranieri and mourinho in terms of quality coaching and management. Mourinho might have the edge but just too slight. The big factor was that they have the money to buy star players.