I agree that as of now you have to give the Ravens a good shot against the Chargers. However, I think claiming the Ravens are 5-4 due to mistakes goes back to something I often say, which is fans blow up their teams mistakes, bad luck, and questionable calls against while minimizing those of the opponent.
I'm not minimizing anything...I'm stating a fact.
In the games they have lost, they have made a lot of mistakes.
Now, some of that has to do with playing good teams and those teams causing and taking advantage of those mistakes but the Ravens have to cut down on them.