possibly they are running their tv in retail store mode is which much brighter (vibrant) and therefor consumes more electricity. I know my set has this setting,

possibly they are running their tv in retail store mode is which much brighter (vibrant) and therefor consumes more electricity. I know my set has this setting, neither my phillips LED/LCD or my LED/DLP have it as their default setting but the difference between modes is striking and many might run it anyway. There are warnings on the DLP set about using it.