Probably even cheesed through the busters in DPS stances. (Like the WAR video, the WAR mitigated the first and third busters simply by using Holmgang lol).
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In regards to A1S
One of few instances where Holmgang is better than HG/Living dead because of its short 3 min CD aligning with 2/4 Possible tank busters. Can confirm stupid numbers is largely achieved by using this cheese. With how this fight works in particular, PLDs kind of have to put themselves in ShO eating 2+ GCD's of penalized-zero damage ontop of having to actually maintain aggro through their lowest pot combo.
However I can see DRK staying out of grit for the full length with SSkin, SWall, and DADMind. I havent tested it myself but that should be enough to survive the Buster without grit and in full slaying. However the full dump still makes it inferior to WAR since a WAR can have vengeance, RI and ToB+Conv for everything in the rotation outside of the tankbuster.
You would need both Dragon Kick and Apocatasis to simulate DRK level of mitigation for PLD but both in the end fall short against WAR and are much more riskier to pull off. A string of stray auto-crits into a double gunnery/fount could mean death.
Another note is that this is still a small sample size and should be taken with a grain of salt. Many of these parses are progression parses and alot of safety nets were made for the success rather than pure DPS.
Just went ahead and posted my parse for those wondering numbers for ot drk :D
773.96
http://i.imgur.com/kTayHLi.png
Drk MT A3S
http://i.imgur.com/MTBKIeR.png
Forgot to take SS, but last night our WAR parsed 935 on A1S and I parsed 1040 on DRK on A2S. Gonna try to see if anyone still has the parses from last night.
In general Alexander Savage does not seem to hit the tank itself very hard. The mini tank buster for the first 4 legs of A4 is like one Flare Breath from T13 or something in terms of how fast your HP drops. The tanking stance is of course great, but there's almost nothing you can't survive in the DPS stance if you pop cooldowns.