The chargers win at Dallas makes it far less likely the Ravens will get in at 8-8, because the Chargers (with a very easy schedule) are likely to get 9 wins if they don't run the table.

I would need a separate article to explain, but the Ravens will win virtually any tiebreaker (conference record or common opponent) against the Chargers. However, the far greater risk now is simply that the Ravens revert to inconsistency and the Chargers win 1 more game.