Sure they will. Never seen any indication that Superbowl ratings are more than minorly impacted by the teams playing. There's a large chunk of American society that simply watches the Superbowl, it's the day non-football fans watch football. An all PA Superbowl shouldn't have any less national interest than an all CA Superbowl (Niners-Chargers) or an all Corridore Superbowl (Giants-Raven).
Did you hear Buck just say hang onto your hair today because its windy... LOL!