Is NBC really dumb?

Tomorrow March 22, ABC is airing a new episode of Grey's Anatomy instead of the scheduled rerun. They're doing this so GA can lead into their new drama October Road (which I believe did well in the ratings, though reviews seem to be lukewarm.)

NBCs new show The Black Donnellys follows a rerun of Heroes.

If they (NBC) were playing with that proverbial 'full deck,' should they have worked it out to have a lead-in show like Heroes have new episodes too?