In order to hold that honor, several components of Pittsburgh's defense work harmoniously with one another. They have a pounding pass rush combined with swarming defensive backs that make opposing quarterbacks pay for any little mistake.
The Cardinals needed to execute well in order to have a chance to get to 2-4. After a Beanie Wells injury and a quarterback who couldn't find his groove, the Cardinals fell to a disappointing 1-5.
With the Baltimore Ravens on deck for next week's game, the Cardinals are going to have to learn from this week's mistakes.
Whether or not the Cardinals will take this as an opportunity to learn is up to them.
In any event, here are five things the Cardinals taught us about themselves this week.