The Defense held the Giants to 13 points.  That should be enough to win the game.  The offense, or Trevor more specifically spotted the Giants 7 points.  His inaccurate passing also caused injuries to the receivers by putting them in awkward positions.  That is squarely on Trevor, he is not a starting caliber NFL QB.  Now to your point, we maybe don't have a starting caliber QB on this roster.  But Trevor never should have came back into that game after the half.