Per
http://www.nfl.com/standings/tiebreakers :
1.
Eliminate all but the highest ranked club in each division. These three clubs are in different divisions, so skip this step.
2.
Head to head sweep. If one of the clubs has gone undefeated against the others, it wins the tiebreaker outright. So if the Ravens had beaten both the Chargers and Colts, it wins the #1 seed in this examle. This is NOT the case, so skip this step.
3.
AFC record. All 3 clubs are 10-2 in this example, so skip this step.
4.
Best record in common games, minimum of four. These three clubs DO have four common opponents: The Broncos, Bengals, Titans, and Bills. Records in these games:
Chargers: 5-0
Colts: 3-2
Ravens: 3-2
Chargers get #1 seed.
Now we reset the tiebreaking procedure to determine the #2 seed. The first 4 steps are the same. So we move to the 5th step.
5. Strength of victory:
The Ravens opponents in games they won have 70 wins.
The Colts opponents in games they won have 80 wins.
It si impossible for the Ravens to make that up in the last two games in this scenario.
#2 seed Colts
#3 seed Ravens