The Bears have weaknesses, inability to "bring it" is not one of them. The Bears brought their A-game against the Dolphins, and Grossman displayed his chronic incosistency.
They need to be able to lean on the running game when Grossman doesn't have it. He tends to throw at a precise spot, wich looks beautiful when he hits that spot. However, if he should be just a bit off that spot,in the wrong direction, it becomes, out of reach for his reciever.
Often resulting in an interception.
The Bears defense will play as hard as anyone, on any day. So when you lay one on that defense, you have accomplished something. ( I live in Illinois, so I get to see alot of them.) Don't discredit your own team, thinking that the Bears didn't show up. The Dolphins, without Culpepper, are the team that most of us thought they could be at the beginning of this season. Joey Harrington shhould, only, improve with playing time within that system.