Nothing wrong with mixing it up a little - Philip Island is synonymous with the bikes, so it makes sense to share the airtime. Lets face it, its the only time the casual fan will ever see them on the TV.
Mix it up. Another code can only improve an event and supporters of both codes can get air time. Adding bikes to an event means more spectators equals more revenue. Win win. And lets face it, our bike riders are doing better overseas than our car drivers.