Inconsistent Outrage?

At Out of Ur, Dave Terpstra wonders why Christian parents aren't as outraged by Pirates of the Carribean: Dead Man's Chest as they were by Harry Potter:

The similarity in material between the two movies that should concern parents is amazing. First, both films focus on activities contrary to the teachings Scripture, piracy and witchcraft. Second, the hero of Pirates, like the hero of Potter, is practicing what is considered evil—not just battling against those who practice it. Third, there are dark forces involved in both. Harry Potter films are amuck with sorcery and the like. Pirates of the Caribbean films are full of curses and the undead. The list could go on.