They're not.- Pieces are listed by item level and not currently ordered by any priority formulas
how can the i264 tier 10 pants be higher than pillars of might in effective health?
This list is extremely awesome. I'm currently using it to upgrade the offtanks in my 10 man raid.
Good news everyone:
The Unidentifiable Organ has been identified to drop from Putricide.
SIMON DE MONTFORT, EARL OF LEICESTER
pioneer of representative government who was
killed in the Battle of Evesham on 4 August 1265.
Keep in mind I created this list back in December 2009 (over 6 months ago now lol). Lot more info has come out since then including more wowhead item links. Since people still refer to this list I went ahead and updated some of the links and info for accuracy.
The other thing to mention is that this list is categorized on Ilevel of items not on EH or any other formula. Being able to see all the different pieces side by side should allow you to make an educated decision on what would work best for your particular gear setup. As with everything else involved with tanking, use the info on TankSpot to educate yourself and then make your own informed decisions.