The best team Detroit played caught them without Montgomery, who is the heart of their running game, and with a clearly hobbled Vaitai in the lineup and Jonah Jackson out of it. Detroit was playing with one hand behind its back, and you could tell they knew it.
The second best team they played won the coin toss in OT.
If they stay healthy, anything can happen, including winning the #1 seed. In the playoffs, anything can happen, especially if they get the #1 seed, and especially if they get a quality pass rusher and DB back.