If a team takes any game lightly then there is a good chance it will come away with a loss on any given week no matter who the opponent is.
That being said you can mostly point to a few games every year that can be used as a barometer for how good a team will be that season.
Not included in this list are any divisional games for the Steelers as each of those games will obviously be important if they want to make the playoffs. Even a team that has been as bad as the Browns have been over the years the Steelers went 1-1, albeit without Ben Roethlisberger in the loss.
Here are the five non-divisional games that could end up determining the Steelers 2013 season.