I've been saving up badges with the goal of buying some tanking pieces for my druid. Much to my surprise you can buy T7 pieces with your badges. So I was think great, I'll buy the T7 gloves. Only when I looked at them I was shocked. Druid T7 gloves are WORSE then my blue gloves.
Let me compare for you Handraps of Preserved History (from completing normal strat)
http://www.wowwiki.com/Handwraps_of_Preserved_History
and T7 gloves (they are T7 for gods sake, shouldn't they be better?)
http://www.wowwiki.com/Heroes%27_Dreamwalker_Handgrips
So assuming you socket the T7 with a blue +stamina gem and get the socket bonus (which you wouldn't, but just for comparisons sake)
the Handwraps have:
Better Stamina: 103 to 90 (66 + 24 from socket)
Better Agility: 68 to 54 (50 + 4 from socket bonus)
Better Expertise: 40 to 0
The T7 has
Better Haste: 33 to 0 (Doesn't really matter to a tank)
Better attack power: 102 to 100 (Doesn't really matter to a tank)
Better crit: 44 to 0 (Doesn't really matter to a tank)
Better Armor: 353 to 329
So for the stats a tank really cares about T7 gloves give you 24 armor at the cost of 13 stamina, 14 agility, and 40 expertise over a blue. This implies to me that there is a problem with the way T7 was set up for tanks.