Just about anybody with a Middle-Eastern-sounding name and the slightest plausible connection to or proximity with "Al Qaeda" (conveniently defined and delimited by the torturers themselves) would have been equally useful for this purpose. There is no "right" man, no "wrong" man. That's torture. It's a show, a blood pageant. It's reading the Tarot or goat entrails.
That's the system, the procedure you defend when you apologize for torture.