I would say if there's anything to it, it has more to do with style. Arkansas, UK (under Pitino), and UT currently have very aggressive presses and man-to-man. To many opposing fans, these teams appear to be fouling on defense virtually every possession. The refs that watch it see otherwise. Until someone can suggest a logical reason why Duke would be favored by refs but other top powers (UNC, Arizona, Indiana, Kansas, etc.) are not; I don't buy the conclusion.
(sorry to make a bigger deal out of it than it really is).