Yeah, you can't go by point totals, because those came against a schedule completely different than what they'd play. It'd be like saying a 6-6 SEC team would be 6-6 in the Sun Belt. Doesn't work like that.
you're pretty much have to take the avg points earned per game for versus each opponent, and multiply it times the number of times they'd play that opponent in the new setup. Then add it all together (for every team) and see what those numbers are.
That wasn't the point, KevFu, at least not exactly. The point was, what if 5 of the strongest teams are in one Division? Sure, they're going to be limiting each other's Point Totals, but all 5 may well finish with better records than the 4th place team in the other Division (who knows, possibly even 6 teams in the one Division might have a better record than the 4th place team in the other Division), but a strict Top-4 Divisional Playoff means more weaker teams can get in the Playoffs. Worse than it is now, not having the Top-16 teams in the Playoffs.
Even with a more balanced schedule, still about half of any team's games would be outside the Division, and that certainly lends to the possibility that a group of strong teams from one Division can pick up a lot of Points outside the Division. Or simply another Division may only have 3 strong teams.