Plus, you look at Moss's resume and he was second-in-command under McCarthy at Green Bay and a very strong candidate for an NFL head coaching gig, even without the Rooney Rule. (He even did head coach a Pro Bowl roster after McCarthy bailed... and won.)
Hayes, he's kind of a head scratching hire. He's never held anything above a position coach level, other than one Shrine Game, and he never really showed much of a desire (either that or no team really showed interest) in moving up the ranks.
Moss has a strong resume, and Hayes has by far the weakest.