They clearly were letting them get away with a lot. This was a lot better for the Ravens personnel than the Patriots (big WRs vs little WRs). That being said, there's almost always less PI called in the playoffs than the regular season (which is something I really dislike. Be consistent). The Patriots just didn't seem to adjust to this at all. Part of it is that they lost their only big CB pretty early, but they played an awful lot of soft zone in the 2nd half.