Looking at how Massey rates teams against FCS opponents only:
SFA (5 games): Schedule 42, Offense 32, Defense 6
SLU (5 games): Schedule 47, Offense 24, Defense 18
LU (6 games): Schedule 56, Offense 75, Defense 36
UIW (6 games): Schedule 23, Offense 26, Defense 32
UIW's defense is rated better than Lamar's yet they lost in a high scoring shootout at home to East Texas A&M.
SLU has two shutout games in a row. Lamar better be 8-1 heading into that game or the season could end up on a very sour note.