To start off:
Here's how I am analyzing potential upgrades. Feedback would be appreciated. This is a general upgrade analysis, not catering to either extreme of a BV focused or Avoidance focused set.
First, I'm utilizing Rawr's Tankadin module to generate some of the numbers, and am assuming full 25 man raid buffs.
Second, I left the Boss Attack, Threat Scale, and Mitigation Scale options at their defaults (30000, 10, and 7000). I believe the 30000 Boss Attack is representative of a hard hitting boss like Patchwerk, so looking at how differently gear ranks out at lower attacks might be interesting later (should value BV higher). The Threat and Mitigation scales, I don't understand enough to mess with.
For an example, I'll look at helm comparisons. My current helm is . Before comparing, I edited the helm to add a meta-socket, blue socket, and +6 defense socket bonus, which reflects the 3.0.8 changes to the helm.
The two helms Rawr places above Tempered after the edit are and . I decided to compare the stats I have (raid buffed) in Rawr before upgrade to what they are projected to be after.
[B][U]Stat[/U]: [U]Tempered Titansteel[/U] - [COLOR="SeaGreen"][U]Obsidian Greathelm[/U][/COLOR] - [COLOR="Blue"][U]Valorous Redemption[/U][/COLOR][/B] Health: 38586 - [COLOR="SeaGreen"]38376[/COLOR] - [COLOR="Blue"]38156[/COLOR] Block Value: 1371 - [COLOR="SeaGreen"]1408[/COLOR] - [COLOR="Blue"]1487[/COLOR] Avoidance: 45.5% - [COLOR="SeaGreen"]44.4%[/COLOR] - [COLOR="Blue"]45.8%[/COLOR] Dmg Taken: 16.55% - [COLOR="SeaGreen"]16.77%[/COLOR] - [COLOR="Blue"]16.23%[/COLOR] Dmg when Hit: 9110 - [COLOR="SeaGreen"]9050[/COLOR] - [COLOR="Blue"]8981[/COLOR] Mitigation: 65.06% - [COLOR="SeaGreen"]65.14%[/COLOR] - [COLOR="Blue"]65.11%[/COLOR] Defense: 542 - [COLOR="SeaGreen"]532[/COLOR] - [COLOR="Blue"]545[/COLOR] %Armor Mitigation: 61.69% - [COLOR="SeaGreen"]61.77%[/COLOR] - [COLOR="Blue"]61.73%[/COLOR]
I included Dmg Taken, though I'm not exactly sure what its meaning is. Perhaps someone can explain what the calculation is based on and represents.
In looking at these three sets of stats, I can see that I lose a lot of health moving away from the , and lose the most moving to tier 7.5. However, looking at other stats, I take a good deal less damage per hit while wearing tier 7.5 due to higher mitigation (more armor and a lot more BV) and gain more avoidance to boot.
The greathelm offers less of a health loss, but gains me less in terms of avoidance, while offering similar mitigation when I am hit, and additionally loses enough defense that I'll have to pick up a second upgrade with higher defense somewhere or re-gem/enchant current gear, which leads me to conclude I'd like to pick up the as soon as it drops, but wavering on whether I should pick up the when it drops at all, assuming it drops before the valorous (isn't that always how loot drops go?).
Does anyone else analyze their sets differently, potentially leading to different calls on pieces like these? I'd like to further refine my methods to make these things more clear-cut, knowing they'll never be 100% clear like most DPS upgrades tend to be.
Related Question - Is there a method by which one can infer useful Pawn values from Rawr (perhaps even multiple scales if you want separate avoidance and mitigation scales, and then an "overall" scale)?
Edit- Rawr Tip: Before evaluating gear in Rawr, go to the "Tools->Set Default Gems for Equipment" menu and select rare tanking gems for each of the colors and meta. This seems to keep Rawr from using gems that aren't available in game in the comparisons (30 stamina gems, etc), and it sticks to your presets instead (24 Stam, Stam/Dodge, Stam/Parry, 32 Stam/2% Armor meta, in my case).