Are The Steelers The Hardest Team To Figure Out?

Last season they were easy to figure out, because they were the best in the league. This season they are suffering from things like penalties, poor protection and poor defense. Ever since Polamalu's injury things have been going downhill on defense and it's cost them. I also think they are just tired, constantly winning isn't the easiest thing to do. I see them making the playoffs but losing in the Conference Game.