As someone who is an Eagles fan I can tell you this has been the formula in almost every game defensively. Rush 4 guys up front, have the corners play incredibly soft coverage (because our corners aren't good enough to jam the receiver at the line and then be able to cover effectively), and force the opposing team to throw short passes or screens and just hope for them to make a mistake at some point.
We also have a habit that if a team is on 3rd and 12 or longer we'll drop all our corners, safeties, and a few linebackers to the yard line they need to get to and force teams to throw underneath. We only had a chance to do that one time last night but against the Cardinals I think we got a chance to do that 4 or 5 times.