For some odd reason, Hollywood -- both the movie and TV components -- often releases two competing productions dealing with the same subject matter at the same time. Think the two asteroid-hitting-earth movies or the two volcano-erupting movies of a few years back, etc. They cannibalize each other.
This season we had two similarly themed cult serial killer shows, one of which was on a Big Four broadcast network with all of its marketing muscle, and one was on the red-headed stepchild of the broadcast world with virtually no marketing effort behind it. Most folks in the televiewing audience only have the stomach to sample one of these kinds of shows. Which one was it going to be?