He improved AZ'z record every yr except the last one and Murray was hurt a lot of it. Murray is a Diva he would not watch film and instead played video games , so much so that it was put in his contract extension that he had to watch film. Kingsburry is a QB whisperer , he'll need a strong DC but he's a ex HC that has a good shot at being a successful one on the 2nd try. Also he's said he learned a lot about being a HC from Quinn