From the launch information http://www.thehiddenforest.org/forum/viewtopic.php?f=2&t=14825&p=86655&hilit=blighted+augments#p86655 the augments are meant to be an upgrade for glowing augments but they all seem to be missing the skill modifier. 19% on most of the glowing augments but none on the Blighted or Noble augs.
They also seem to be only for slot 8 and 18 while glowing allowed slot 17 as well.
Noble's Trinket is missing slot 8 and instead has slot 6 - http://www.thehiddenforest.org/webtools/items.php?id=123165