I'd imagine precisely that. A manager that can do it well almost bores the opposition to death, and makes them work harder to get the ball back. Tiring them out through their lack of control. It works better against teams that naturally attack or are naturally forward/fast-flowing. Horrible to watch against a strictly organised and efficient team.
Or in Martin's case against PL opposition, works minimally
If it's done right, and the element of control is balanced with creating chances frequently, it's fine. But where it comes unstuck is against a team with a low block or small gaps between defence and midfield.