Steady on Falcon, salaries have been openly discussed on many an occasion here, at times resulting in somewhat lengthy threads and moreover in many respects quite usefull for prospective employees of one contractor or the other.
Maintaing 2 ratings deserves recognition and that is what they achieved, stating it on an open forum whether for recruiting purposes or merely for comment is as far as I know, to date, not yet in contravention of the spirit of this forum. If it is I am sure it will be zoned in on rather rapidly by one of the monitors.
I would venture that regular comparisons only serves to strengthen the competitive nature of ATC employment, which by all standards today are run as a business, irrespective of where that may be.