I look at it more as:
Do rolls/songs: get SMN for PD, use PD, run to first pulled mob > use souleater, fight mob, this fight lasts 1 min~ > relock, get new smn, use PD, run to fight next mob thats pulled, this takes 1 min (2 min since used SE)> kill mob, 1 min (3 min since SE) > get new smn, relock, pd, run to next mob, 1 min (4 min since SE)> kill mob, 1 min. (5 min since SE) > redo rolls/songs and this is when souleater is up for use again.
If you're slow, sure you can get 2 souleaters in 1 wave, but thats not going to happen with a good group since it's 6 minute recast. even if fights last 1.5 minutes, and you spend the full 1 min to get a new SMN and pull, you're still not to 6 minutes til the third mob is half dead.
Ya, its not that bad of an estimate if your group is sorta bad and all your DRKs want to SE the same mobs.
Resolution will come out a bit ahead, unless attack is low, but its a 7 hit attacking faster VS Ukons 6 hit with higher damage per hit, higher extra attack rate, higher WS frequency, and I think Im forgetting something else.
Ukkos Fury in Legion will look something like this, assuming decently high fSTR and 2.0 pDIF, which shouldn't be to far off:
[{(270*2.2)*1.1}*{(3*.75)*1.22}+{2*.25}]+[(270*1.48)*{(3*.75)*1.22}+{2*.25}]
Which google says is 2892~
[{(270 base damage*2.2 fTP of first hit)*1.1 7% WSD of Phorcys body and 3% of Ogiers legs}*{(3*.75 cirt pDIF and Crit rate)*1.22 crit damage}+{2*.25 non crit pDIF and non crit rate}]+[(270 base damage*1.48 fTP of second hit and extra attacks)*{(3*.75 crit pDIF and Crit rate)*1.22 crit damage}+{2*.25 non crit pDIF and non crit rate}
If I knew what DRKs were suppose to be using I could give a real answer on this, but all my resolution figuring comes in around 3k, given the same parameters of decently high/capped fSTR and 2.0 pDIF. So unless attack is suffering, Resolution will barley win for WS average, but as I said, Ukkos should have a higher WS rate which makes up for this. Once the DRKs pDIF stops being capped during WSs Ukkos will start to pull even/win, since crit hits become more powerful and Resolution will basically have a -8% damage mod from the attack penalty.
Yes, it does work that way. Everything can be factored in, and everything can be proven one way or the other with math. And since we're speaking specifically about legion at this point, you will always have buffs like berserk, last resort, etc. The only ones you wont have is Blood rage without a WAR group, and Souleater.
EDIT: Didn't post Resolution stuff.
(((300*.94)*1.07)*2)+(300*4.16)*2)=
It should look something like this for 2.0 pDIF, which is 3100~ damage
Add in -8% pDIF (1.84 instead of 2) and it drops to 2852~ Slightly below Ukkos.
