http://failsafedesign.com/maintankadin/viewtopic.php?t=17767
Says it all... I hear whining and #$(*ing from Holy Paladins that I know all the time that the Protection Paladins are ending up higher than them on the healing charts and that they should get to judge Light.. Well -- clearly those Holy Paladins don't parse reports for exactly how much threat this ability generates.
It is a core tanking tool. One that will clearly be getting a threat nerf in the near future. But even at 50% threat generation it would still pull over 2000 TPS for us in some ideal 25man fights.