I think there are a lot of excellent teams out there this year in the NFL, but I also think every team has shown signs of weakness.
NE: 11-3, likely #2 seed in the AFC. Pass defense is off the charts good, and the run defense is solid, but much weaker than the pass defense. So they can be run on. But the real issue is offense. Struggling to score points, if you can get to 21 on them, you are in good shape. Kicking is very suspect as well. Got handled pretty good by Baltimore and Houston, and lost at home to KC in a game where the refs played a huge role.
KC: Great offense, but run defense is problematic, and that really could bite them in the butt in the playoffs. They have lost 3 games with Mahomes: to Indy, to Houston, and at Tennessee. They can definitely be had.
Hou: Got blown out by Baltimore and Denver (!). Defense is pretty bad and can be abused.
Buf: Excellent defense but not much of a passing game. Got blown out by Philly and also lost to Cleveland (!), and of course, lost to NE and Baltimore.
Bal: Solid in every facet of the game, including special teams. The one team where I don't see much of a weakness. After they got on their roll, they just haven't shown many holes. But Buffalo and SF showed that they can be contained, so there's hope.
SF: Lost to Sea, Bal, and Atlanta (!). Strong in most areas but clearly have some WTF moments.
Sea: Inexplicable blowout loss to the Rams (!) shows they also have some WTF moments.
NO: Lost to the Rams, 49ers, and Atlanta (!). Just a team that can be had.
GB: Nice record, but they really haven't been impressive. Lost to SF, which is understandable, but also the Chargers and Eagles. So nothing to write home about.
Min: Another solid team but got beat badly by the Bears and have three other losses.
Long story short, every team but Baltimore has had major UGH moments this year. There's a lot of really good teams but all are also vulnerable.