Broseph is correct. Using the same code from which I made the graph in post #254, I found that even when past the unhittable during shield block threshold, mastery still gives more benefit per point than dodge or parry.

Soon I hope to more fully explore what happens as we push further past the soft cap and post some results.

The main reason Mastery has increasing returns is the two-roll nature of Critical Block. The increased chance to Block directly increases the value of the Critical Block portion of your Mastery.

This indrectly increases the value of Parry via Hold the Line due to the talent granting Critical Block. Due to increased Critical Block roll opportunities, the value of Hold the Line increases at a similar rate to Mastery.

Soft-capping with Shield Block doesn't really stop this ramping-up effect.

As Tharamis is no longer playing, I took his code and made some (hopefully) interesting changes:
*Raidbuffs are included
*Statsweights
*rating needed for 1% relative/absolute less damage taken (mastery/dodge/parry)

Any bugs/suggestions are welcome Spreadsheet

I simd most Tanktrinkets out there (keep in mind with my gear ~359 bis, only bracers 372) and got the following avoid-incoming-damag ranking (lower = better) (I neglected Stamina, as everyone has to rat it for himself)

[Porcelain Crab] 15.09% overall, asuming icd 80 sec, procchance 10%, should proc of ~11 sec in a singletargetfight
[Throngus's Finger] 15.39%
[Symbiotic Worm] 15.47% asuming you are always under 35%
[Bedrock Talisman] 15,57% asuming you are always under 35%
[Mirror of Broken Images] 15.57%
[Darkmoon Card: Earthquake] 15.83%
[Vial of Stolen Memories] 15.95% use whenever ready
[Za'brox's Lucky Tooth] 15.96% use whenever ready

Of course you have to reforge parry/dodge whatever else is present to mastery and I simed the reforged version

[Heart of Thunder] Is just the poor mans choice over the valor-points trinket, gives 16.12
[Impetuous Query] 15.47
[Leaden Despair] 16.13
[Tia's Grace] 15.60

Keep in mind that I neglected Stamina and asumed that every trinket with cd is used on cd, so the optimal choice for trinkets might differ. (and sub 35% trinkets seldom procc the second they are off cd)

It appears that the Excel version is broke, this a Google issue by chance?

Can you measure [Figurine - Earthen Guardian] ? I just got that after leveling up JC this past weekend, and I am using it in fights where I need a higher health pool and not so much higher mitigation/avoidance.

First time poster, regular follower of warrior tank thread.

Most of the Sims I have come across seems to de-value expertise and the optimized gear setup assumes all hit/expertise will be reforged to master/parry.

Now while I understand that
- vengeance does help with improving TPS, what use is the increased AP without exp cap?
- the initial post mentions about exp capping being important

Thus my question or request is if the simulators can be modified/improved to give a high value to expertise until cap (26) and then devalue it of course. This way the optimized setup would focus on threat generation before survivability, as I doubt anyone wants a tank who can survive as DPS pull aggro :p

Any ideas if this can be incorporated either in RAWR or any other tanking sim being discussed here?

Please delete this post my answer was not relavent.

I am currently sitting at 4 expertise (3 from racial) and 1.31% hit (all from my neck) and thread only matters the first 30 seconds into a fight, afterwards I can only lose aggro to a taunt. If you are struggling to hold aggro, either you are pushing the wrong buttons or your gear is too low compared to the dds. So for me expertise (and hit) has no value exept more dps which does not really matter. A misdirect/tricks can help for the first moments of a fight, and using your offensive cds is not a bad idea either. The problem with siming aggro is, (same with health) that there is no way to find a value suited for everyone. If you feel you need more stamina, go for it. If you feel you need more thread, go for expertise (but as I said before, unless I have real bad luck at the beginning of the fight, there is never a problem and even if there would be a problem, most classes can drop aggro and you often have a paladine in the raid for some hand of salvation)

They should be reforged to mastery or avoidance where possible. The biggest exceptions are 10-man encounters where you need to be able to reliably interrupt as a tank (ex. Nefarian). However, interrupts such as pummel (which protection warriors will be using in 4.1) will have a guaranteed hit chance in 4.1, so you only have to worry about it until then.