5 easy yards seems pretty good to me.
plus, sometimes the receiver might break a tackle.
i assume stunt means that the linebacker breaks on the reciever at the snap, anticipating a pass. seems like when the lb has to cover almost 10 yards, that'd be something a heismany qb would see and not make the throw. plus he could fake and then the receiver could go downfield with a numerical advantage.
i'm sure it's not a significantly better option than the plays they actually run, just seems like passing up layups to shoot 3s.