It may be blasphemous to quote one animated TV show to make a point about another, but here goes:
In an episode of The Simpsons where the title family was planning a trip to Canada, Homer harrumphed dismissively, "Canada? Why would I leave America to go to America Junior?"
That basically has been my attitude toward American Dad. Specifically, "Why would I leave Family Guy to watch Family Guy Junior?"
Both Family Guy and American Dad come from creator and voice specialist Seth MacFarlane, last seen dividing opinions of Academy Awards viewers.