Wrong forum, my bad. /facepalm

Hi there, I was wondering if the community could perhaps help me out. My main is currently a level 50 Juggernaut tank. Whilst I do enjoy tanking, I have a problem, like in most games, issues with the numbers on stats. As I'm currently occupying myself with gearing my juggy up for hardmode tanking and such, I have issues trying to figure out whether I ought to focus on defence or absorption. Ideally is obtaining gear with both stats but I often find, like during the Belsavis dailies rewards, not sure whether I ought to pick the def-mod or the absorption-mod when I do have to make a pick. Anyone able to help me out a bit?