Army has played one team all year with a competent passing attack: Western Kentucky. The Hilltoppers threw for 435 yards and averaged more than 11 yards an attempt. W. KY scored 35 points on Army, and had guys open all over the field. WF has better receivers, better OL and better QB than W. KY. Also, W. KY plays no defense and gave up 38 points. Army won 38-35. As long as WF avoids turnovers, WF should score points.
Army simply doesn't have the defense to cover Roberson, Perry, Morin... Also, love that WF had a week off to prepare for the option. Not saying WF will shut down Army like Wisconsin did, but the defense should be able to hold Army to the low 20s (again assuming no Army fluke scores on TOs or special teams).
The game is not going to be easy, and scheduling Army as often as WF does is beyond dumb, but WF should win this game.