I'm not so sure this is accurate, at least not in the current job market. My department is currently interviewing applicants for an open position and we've had a very large number of individuals with publications in AJS, ASR, and a number of highly ranked journals in specific errors or concentration (most notably, Criminologists with pubs in in the ASC journal). We had well over 150 applicants--nearly all of whom were well qualified for the position. It is an extremely competative job market and we immediately cut individuals with degrees from "lower" institutions and publications in low ranked journals (basically, anyone with a PhD from an unranked program was cut). Our top ten list of candidates comprised of PhDs from Chicago, Penn, Maryland ect...The lowest pedigree to make the cut was an individual with a PhD from North Carolina State (who also had a pub in AJS).