Both companies have their strong and weak points... including some in critical strategic areas. For instance, if Jobs wants to live up to his reputation as a dictatorial advocate for quality and engineering, why doesn't he force-choke the program manager for iTunes?
I suspect that the iTunes UI Manager's job strongly resembles an Admiral's position. On a regular basis, I can see minions dragging the latest victim out of Steve's office while he intones, "Apology Accepted."