lack of sacks due to max protection against defense?

Is this true?  The nytimes has a blurb about the steelers in a semi-humorous fashion..check it out after the jump.

From the NYTimes:

The Steelers are passing 66 percent of the time, and their defense has recorded only two sacks, but that doesn’t mean that the pod people have invaded. The Steelers’ run-pass ratio comes with an easy explanation: they aren’t running well, so they’ve faced 21 second-and-long and 15 third-and-long passing situations in two games. The low sack total is the result of Troy Polamalu’s absence and a pair of opponents with max-protect and screen-happy game plans. The Bengals have more rushing yards (237) and sacks (9) than the Steelers. Again, there’s no reason to suspect alien body snatchers. But if the Bengals beat the Steelers at home for the first time since 2001, warn everyone.