Yup, net points scored is still a tie-breaker, so it can have an effect during the regular season.
As my murky memory recalls...
(1) Pats vs divisional opponent ;
(2) Pats down by a few with less that a few sec. left;
(3) Brady tosses a Hail Mary from mid-field;
(4) ball falls harmlessly in EZ;
(5)
+
for DPI = 1st & goal;
(6) Pats score TD with clock @ 0:00;
(7)
opponents refuse to play on PAT;
(8) kick-holder strolls in for 2 - Pats win by 5;
(9) later in the season the same team beats Pats by 4;
(10) teams are tied in standings > head-on results > split > total points in head-on games > Pats by 1;
IF the opponents had bothered to show up for PAT;
IF the Pats kicked;
IF the total pts. in head-on games were tied.....
I assume out would come the two-headed coin