According to the survey site (
http://www.atrsworld.org/publications.html):
Since its inception in 2001, the Annual Global Airport Benchmarking Report - now a mainstay due in large part for the attention it has garnered as being an unbiased and comprehensive assessment of airport performance, includes 3-volumes of productivity, efficiency, and unit cost competitiveness data.
So one must then wonder why Lloyd McCoomb (president of GTAA) felt it necessary only this year to "see no other recourse than to pursue all means at our disposal to receive fair treatment".
Interesting how some people are afraid of the truth. I always think a better course of action is to confront it head on and deal with it constructively in order to improve.