Ranieri's formation/squad selection has conceded the 2nd least amount of goals (only 4 more than Inter, despite on paper, Inter's defence being much stronger).
http://sport.virgilio.it/calcio/serie-a/statistiche/squadre/goals-subiti.html
Ranieri's formation/squad selection has scored the 3rd most amount of goals in serie a, more than Fiorentina and Roma, whose coaches are supposed to be infinitely more creative.
http://sport.virgilio.it/calcio/serie-a/statistiche/squadre/goals.html
Ranieri's formation/squad selections has us in 2nd place.
If the above points weren't proof on their own that you are wrong about your views on the 4-4-2, Ranieri has never been able to consistently field his strongest 11, which makes all the above look even better.
You hate him for reasons that are unrelated to our league position, goals for, goals against and squad selection. So, once again, how has Ranieri been a hindrance to Juventus?