Looks like human factors are not limited to man-machine interfaces but instead start with the manual. Could it be misleading in a stressful situation?[
Good point TripleBravo. A ground school instructor (also an experienced psychologist) commented on the "tricky" wording of some of the exam questions and multiple choice answers. He called them "brain shunts." Those familiar with electrical circuits will understand the analogy.
Reading the remainder of the MEL; It looks like double jeopardy in the case of both reversers inoperative.