You are wrong.
If we both end up 13-4 and they lose to Dolphins/Jets, then we'd be tied in common games 11-3 and we'd win the seeding by conference games (all their losses are within conference, we have one loss vs Falcons).
As for common games tiebreaker, just look at the other games, it is easier. They are 2-1 (wins Giants, Titans, loss Raiders), we'd be 2-1 (wins Eagles, Chiefs, loss Texans). So it means same record in the common games.