Hey Guys, I have a little question.
I am working on an own Arms DPS Calculation Spreadsheet (don’t worry, it won't be able compete with yours, landsoul

) and for that I also need to know about the arpen mechanics.
Now the fog is lifted and we all know that it isn't a bug, but a wanted thing, how it works now, I investigated a bit, to get proof how I have to deal with it in my spreadsheet.
Now the little question:
Are you 100% sure about the 10643 boss-armor?
To get to the numbers I collected from the Heroic Training Dummy, the armor would have to be something about 11620 to 11640.
I found out that after arpen affected the "(armor + C)/3"-part, all other debuffs have influence on the whole armor that arpen left back inclusive the "armor-(armor + C)/3"-part.
So like that:
x = sum of arpen buffs(mace spec/battle stance/gear arpen)
y = product of arpen debuffs(sunder/ff) (1 - 0.95 * 0.8)
(armor - (armor + C)/3 + (armor + C)/3 * x) * y
For C = 15232,5 and armor = 10643 I get all correct percentages I collected and calculated through the tests.
But don't I have to use for C = 16635 for bosses? Or do I have there an error in reasoning?
If not, I only get correct numbers with the mentioned 11620 to 11640 armor.
The complete formula I used:
x = sum of arpen buffs(mace spec/battle stance/gear arpen)
y = product of arpen debuffs(sunder/ff) (1 - 0.95 * 0.8)
C = 400 + 85 * targetlevel + 4.5 * 85 * (targetlevel - 59) (out of the blue post for the half armor value)
% damage done = C/(C + (armor - (armor + C)/3 + (armor + C)/3 * x) * y)
Thanks in advance for all response!
Edit:
Sorry, I made a mistake in typing the formulas. I accidentally took a version of the formula I used to "play" with, for investigation. So also the text is wrong, too.
It should be:
x = sum of arpen buffs(mace spec/battle stance/gear arpen)
y = product of arpen debuffs(sunder/ff) (1 - 0.95 * 0.8)
C = 400 + 85 * targetlevel + 4.5 * 85 * (targetlevel - 59) (out of the blue post for the half armor value)
armor after buffs/debuffs = armor*y - (armor*y + C)/3 + (armor*y + C)/3 * x
and
% damage done = C/(C + (armor*y - (armor*y + C)/3 + (armor*y + C)/3 * x)