Oh good, now there are even fewer reasons to play a full tank fighter. :/
because fighters and paladins needed moar pigeonholing amirite
Sigh. This is a change I hope they revert before the patch goes live... it also hurts offtanks, makes fighters more susceptible to CC and kills build diversity ( seriously, unless a fighter off-tank whips out a shield he's going to be more or less as durable as a barbarian with Defender up now... ). Also, while talented defender used to be pretty good pre 2.0, it also involved a pretty hefty investment in term of resources ( class ability + talent ).
I'd rather they nerfed shields instead, if they feel deflection tanks were too good ( and maybe reduce the accuracy penalty to compensate somewhat ).
They already changed Perception from +deflection to +accuracy. This means minus 8+ deflection for most tank-builds and better accuracy for some enemies.