It's called 'diminished expectations'."
All of which is a roundabout way of saying that the people who think they enjoyed POTC3 are simply suffering from the cinematic equivalent of long-term deprivation of the basics of a civilised existence. They are the multiplex dwellers who have become used to living in the cultural freezing cold, whose brains have been addled by poisonous celluloid asbestos, and whose expectations of mainstream entertainment have been gradually eroded by leaky plumbing and infestations of verminous pests.
They are the Audiences of the Apocalypse.
How did they get here? The short answer is: Michael Bay. The long answer is: Michael Bay; Kevin Costner's gills; Cleopatra on home video; and the inability of modern blockbusters to lose money in the long run, provided they boast star names, lavish spectacle and "event" status expense. Oh, and they don't try to be funny…
Mark Kermode din cartea sa The Good, The Bad & The Multiplex