*WARNING WALL OF TEXT AHEAD*
Hi everyone. I'm doing this post for a few reasons, first to show of how mitigation works for those that might not know, second to explain why I think that the Footman set is not a necessity for tanks, and to show the diminishing return of increased dmg mitigation.
The testing I have done was done with my Vr14 DK Dunmer Tank, and it was tested against a Vr11 Storm Atronach by the Shada's Tears Wayshrine in Craglorn.
The way dmg mitigation is calculated is simply by multiplying the decimal forms of the decreased dmg output of the enemies. So say you have hardcap'ed Physical resistance and block at the same time, it would look something like this: 0.5*0.5=0.25=75% mitigation. Or say you are a DK with Absorb magic while blocking with hardcap'ed Physical resistance and the sword and board passive: 0.5*0.5*0.9*0.92*0.8=0.1656=83.4% mitigation.
The gear I used while testing was as follows:

My stats:
PHYSICAL RESISTANCE:
- Gear only: 23378
- Gear+Hardened Armor: 28498
- Sword and Shield Only: 1759
- Sword and Shield+Hardened Armor: 6879
SPELL RESISTANCE:
- Gear only: 22143
- Gear+Hardened Armor: 27263
- Sword and Shield Only: 4259
- Sword and Shield+Hardened Armor: 9379
During my tests while I wore full gear I tested with both Footman on and Footman off, though I always kept the jewelry since there really aren't that many jewelry options for tanks. The Attack I tested against was the atro's "Bash" and its base dmg when I wore no gear and wasn't blocking was 5597dmg. Further more I used all different combinations of the skills that were available to me as a DK to check the differences in mitigation. The skills I used were Deep Slash, Absorb Magic, Hardened Armor and Ring of Preservation. Now before I being to show all the number, I know that the Footman set version will always give more, but what I meant by that it's not a necessity is that its not really that significant of an increase to state that its a must have.
Base dmg: 5597
First I tested without full gear:
- Blocking with no gear: 2519 dmg taken, 55% mitigated
.
- Blocking with only sword & shield: 1908 dmg taken, 65.9% mitigated
- Blocking with only sword & shield and hardened armor: 1751 dmg taken, 68.7% mitigated
- Blocking with only sword & shield and absorb magic: 1690 dmg taken, 69.8% mitigated
- Blocking with only sword & shield and ring of preservation: 1686 dmg taken, 69.9% mitigated
- Blocking with only sword & shield and deep slash: 1622 dmg taken, 71.0% mitigated
.
- Blocking with only sword & shield, hardened armor and absorb magic: 1551 dmg taken, 72.3% mitigated
- Blocking with only sword & shield, hardened armor and ring of preservation: 1547 dmg taken, 72.4% mitigated
- Blocking with only sword & shield, absorb magic and ring of preservation: 1493 dmg taken, 73.3% mitigated
- Blocking with only sword & shield, deep slash and hardened armor: 1489 dmg taken, 73.4% mitigated
- Blocking with only sword & shield, deep slash and absorb magic: 1437 dmg taken, 74.3% mitigated
- Blocking with only sword & shield, deep slash and ring of preservation: 1433 dmg taken, 74.4% mitigated
.
- Blocking with only sword & shield, hardened armor, absorb magic and ring of preservation: 1371 dmg taken, 75.5% mitigated
- Blocking with only sword & shield, deep slash, hardened armor and absorb magic: 1319 dmg taken, 76.4% mitigated
- Blocking with only sword & shield, deep slash, hardened armor and ring of preservation: 1315 dmg taken 76.5% mitigated
- Blocking with only sword & shield, deep slash, absorb magic and ring of preservation: 1269 dmg taken, 77.3% mitigated
- Blocking with only sword & shield, deep slash, hardened armor, absorb magic and ring of preservation: 1165 dmg taken, 79.2% mitigated
Now for some talking after that wall of text. First, the reason ring of preservation is in here is that I wanted to simulate what it would look like if I were a Nord, now the Ring does 8% mitigation while Nords get only 6% so it doesn't really add up but meh. Second, I did the no armor bit mainly because I wanted to show you what skill does what protection. Something I noted though is that I got different numbers for the Absorb magic and the ring of preservation even though their tooltip both show 8% mitigation. And lastly, something to note is that the DK's have a passive which grants them 10% Block mitigation, templars on the other hand have a passive which grants them 15% but only for melee.
Now for full gear testing:
- no blocking with full gear: 3561 dmg taken, 36.4% mitigated
- no blocking with full gear and hardened armor: 3114 dmg taken, 44.4% mitigated
- blocking with full gear: 1246 dmg taken, 77.7% mitigated
.
- blocking with full gear and absorb magic: 1104 dmg taken, 80.3% mitigated
- blocking with full gear and ring of preservation: 1101 dmg taken, 80.3% mitigated
- blocking with full gear and hardened armor: 1090 dmg taken, 80.5% mitigated
- blocking with full gear and deep slash: 1060 dmg taken, 81.1% mitigated
.
- blocking with full gear, ring of preservation and absorb magic: 975 dmg taken, 82.6% mitigated
- blocking with full gear, hardened armor and absorb magic: 965 dmg taken, 82.8% mitigated
- blocking with full gear, hardened armor and ring of preservation: 963 dmg taken, 82.8% mitigated
- blocking with full gear, deep slash and absorb magic: 939 dmg taken, 83.2% mitigated
- blocking with full gear, deep slash and ring of preservation: 936 dmg taken, 83.3% mitigated
- blocking with full gear, deep slash and hardened armor: 926 dmg taken, 83.5% mitigated
.
- blocking with full gear, hardened armor, ring of preservation and absorb magic: 853 dmg taken, 84.5% mitigated
- blocking with full gear, deep slash, ring of preservation and absorb magic: 829 dmg taken, 85.2% mitigated
- blocking with full gear, deep slash, hardened armor and absorb magic: 821 dmg taken, 85.3% mitigated
- blocking with full gear, deep slash, hardened armor and ring of preservation: 818 dmg taken, 85.4% mitigated
- blocking with full gear, deep slash, hardened armor, ring of preservation and absorb magic: 725 dmg taken, 87.0% mitigated
Now that was with full armor and no Footman 5 piece. My favorite combo to use is Deep Slash, Absorb Magic and Hardened Armor. They supplement each other very well and one is magicka, one stamina and one costs nothing if not used which is rarely needed. Now for my last wall of text I will show the same combos but with a 5 piece Footman bonus, I myself as said don't think its enough to warrant saying its a must to have while tanking endgame content. So far I have been able to complete everything I have tried without it, only thing I have yet to try is SO HM.
- blocking with full gear(+Footman): 1041 dmg taken, 81.4% mitigated
- blocking with full gear(+Footman) and ring of preservation: 920 dmg taken, 83.6% mitigated
- blocking with full gear(+Footman) and hardend armor: 911 dmg taken, 83.7% mitigated
- blocking with full gear(+Footman) and absorb magic: 897 dmg taken, 84.0% mitigated
- blocking with full gear(+Footman) and deep slash: 885 dmg taken, 84.2% mitigated
.
- blocking with full gear(+Footman), hardened armor and ring of preservation: 805 dmg taken, 85.6% mitigated
- blocking with full gear(+Footman), ring of preservation and absorb magic: 793 taken, dmg 85.8% mitigated
- blocking with full gear(+Footman), hardened armor and absorb magic: 785 taken, dmg 86.0% mitigated
- blocking with full gear(+Footman), deep slash and ring of preservation: 782 dmg taken, 86.0% mitigated
- blocking with full gear(+Footman), deep slash and hardend armor: 775 dmg taken, 86.2% mitigated
- blocking with full gear(+Footman), deep slash and absorb magic: 763 dmg taken, 86.4% mitigated
.
- blocking with full gear(+Footman), hardened armor, ring of preservation and absorb magic: 694 dmg taken, 87.6% mitigated
- blocking with full gear(+Footman), deep slash, hardened armor and ring of preservation: 684 dmg taken, 87.8% mitigated
- blocking with full gear(+Footman), deep slash, ring of preservation and absorb magic: 674 dmg taken, 88.0% mitigated
- blocking with full gear(+Footman), deep slash, hardened armor and absorb magic: 668 dmg taken, 88.1% mitigated
- blocking with full gear(+Footman), deep slash, hardened armor, ring of preservation and absorb magic: 590 dmg taken, 89.5% mitigated