Question about tankadin addon

[arktik]

The "Total DR" (damage reduction) stat on the add on, how is that calculated and is that reliable to use while comparing gear? Like if i compare 2 pieces of gear and one results in a higher DR how reliable is that in comparing gear because it seems like it is pretty reliable but i am not sure how much i should rely on that.

[_Chloe]

Total Damage Reduction (TDR) is a function of Avoidance and Armor. Total Damage Reduction does not account for Shield Block Value, Shield Block Rating, Crushing Blows, Debuffs (Thunderclap, Demoralizing Shout).

It's a nice way to rate gear, yet it really depends on what you want for each set.