Seems like the Lions still have issues with keeping things together at critical points. 12 men made a critical, high-stress situation resolve easily in Washington's favor, resulting in the TD.
Then Jameson Williams lost his mind under pressure and tried to play quarterback...with the worst possible results, and essentially gave back the TD he scored.
Campbell might be very rah-rah, but discipline is a bit loose with him still.
It's not that Washington was this awesome good on D. They had no answer for Gibbs but the Lions basically wanted to play with all the toys instead immediately focusing on the ones destroying the Washington D, which was the run game and just destroying the Dline of the Washington team.