He may not have a lot of current information. Typically, AQ will place publicly known figures out of the mainstream for security purposes, and the article tends to support this by saying he has been in the safehouse he was captured in for some time.
Still, it sends a message to others, and he will be able to provide information on events he was involved in. In spite of Al Qaeda's best efforts, a transplanted jihadi isn't going to find much to talk about with the average man on the street. He will have heard and seen enough to piece together some sort of overview, if not actual details of ongoing operations.
Too bad for him the Paks caught him, many American prisoners have broken simply from the threat of being turned over to them. Maybe if he's a good boy, he'll be able to earn a ticket to Camp Delta.
Disregard my earlier post. Though the information remains valid, the other thread indicates it probably doesn't apply in this case. Looks like this guy is dirty, looks like he's in the process of running a current operation, and it looks like we might, repeat might, have broken up an imminent attack here in the States.