Prosopagnosia
Bad news! You have Prosopagnosia.
Prosopagnosia is the inability to recognize faces of familiar people - typically because of brain damage. Have you ever watched a movie and seen a face that seems familiar... but you just can't place who it is, while your friends easily identify the actor? Your response is usually "of course! How did I not see that..."
Chances are, this happens a lot because you did very poorly on this test. Better luck next time!