Here are the teams that the Bengals have beaten this year:
CAR
NYG
CLE
LV
Perhaps your confidence is unwarranted.
Perhaps. But...
They lost by 1 point to the Chiefs.
They lost by 5 points to the Commanders.
They lost by 4 points to the Raven in OT.
They lost by 1 point to the Ravens.
They lost by 7 points to the Chargers.
Every one of those games was winnable.
The Dolphins lost a close game to the Bills and Cardinals with Tua, but the Cardinals don't stack up to the teams that Bengals lost to in my humble opinion. Basically Miami lost 1 close game to a good opponent with Tua, the Bengals have lost 5 close games to good opponents this year. They could turn it around and win a lot of games down the stretch even to some good opponents. Not saying they will, I'm saying they could and I think that's more likely than the Dolphins being nearly perfect down the stretch. If I were the Bengals, I'd think my luck was about to turn around.