There is a bug. i have the improved devotion aura as a prot pally on Horde Nightslayer. When i highlight over the action button to turn my aura on, it shows the improved 1029 ARMOR, but the buff on my person and all people in my party, show 729 armor. I can confim that its a visual buff cause when i turn it off/on it increase/decreases by about 1029.