A quick note to advise that Rawr Tank DK module doesn’t (yet) account for the 4-piece set bonus of T10 gear. This means you can’t use its survival/mitigation points to compare the i264 offset items with the tier-gear.
Shazear knows now, and is fixing it.
Until I’m sure of my gear plan regards 4-pc versus offset items, I’m just saving my Emblems. I like to use Rawr for gear analysis.
Update: Feb 28th 2010, it’s been corrected in latest version.