Yeah, if I'm not mistaken, al Qaeda is a Sunni beast. Ya gotchyer bin Ladens, Zawahiris, Yemeni types on the one hand, and then ya gotchyer Al Sadrs, Ayatollahs, and Iranian types on the other.
They have their differences and their deep, long-running hatred of one another on the one hand. But the thing they have in common is what we should concern ourselves with - Islam and its Jihad against the infidel.