Tank Mitigation Calculator

I made this a while back for my warrior and recently adapted it to Rogues/Clerics/Warriors. It's now accounting for all things being additive (as of 1.6). There are exceptions like Rift Guard and Resistances. Download the spreadsheet, then plug your numbers into the light blue input cells to draw comparisons. If you find any errors, please let me know. Thanks.

(Trion, you should look at this; it will help you see the disparity between specs!)