If we’re 11-6, we are getting in the playoffs. Both Chiefs and Ravens have 5 losses, and we win tiebreakers over both. Let’s say Ravens run the table to finish 12-5, well that means they beat the Steelers twice, and Steelers then finish 10-7 at best. We’d still get into the playoffs over the Steelers. That’s just one example of how these teams all still playing each other will make 11-6 just fine to get in.
That said, of all our games left, I would argue this helps our playoff chances the most, since Pittsburgh is one of the teams we’re competing against for a playoff spot. It would definitely further boost our hopes if we can get this win.