The tiebreaker formula within a division is as follows:
1. Head-to-head
2. Division win percentage
3. Common opponent win percentage
4. Conference win percentage
5. Net points
6. Coin toss
Outside of a division, if any in the group are in the same division that is resolved first. Then #3 only is used if there are at least 4 common opponents.
Of course, for intraconference tiebreakers (draft order, etc) #4 is skipped