Edit: For those actually interested in what I posted on the matter, I was incorrect on part of this. Part of my math was flawed, because I mistakenly believed that Inner Beast was off the GCD. MRD does about 10% more DPS w/o even using CDs than a Warrior using Defiance does, making MRD the all-around better class for Frontlines, except for in survivability.
No, it outdoes WAR damage by about 300 potency BEFORE you take into account the stat difference and usage of Inner Beast/Cyclone. I calculated the potencies of every attack needed to get 5 Wrath on a WAR, then compared that potency to the same rotation on a MRD, and that's what my result showed me.
Rotation: HS > Maim > SE > HS > SS > BB > HS > SS
Now, we take potency measurements. We ignore the Maim buff, since both MRD and WAR would have it, so it shouldn't effect the overall end result by comparison, thanks to the Distributive Law of Multiplication.
For MRD, we just add all the potencies together.
MRD: 1590
For WAR, Defiance and Wrath stacks complicate the math, which, assuming critical strikes are double and Wrath increases your chance to crit by a flat 2% per stack rather than just increasing your Critical Strike Rate stat, results in a formula like the below:
0.75(150(1.0) + 190(1.0) + 270(1.02) + 150(1.04) + 200(1.04) + 280(1.06) + 150(1.08) + 200(1.08))
Then we tack on an Inner Beast to the end, modified by the average crit damage gained by the Wrath stack of 5.
0.75(150(1.0) + 190(1.0) + 270(1.02) + 150(1.04) + 200(1.04) + 280(1.06) + 150(1.08) + 200(1.08)) + 300(1.1)
And that's the formula. So, let's solve it.
0.75(150(1.0) + 190(1.0) + 270(1.02) + 150(1.04) + 200(1.04) + 280(1.06) + 150(1.08) + 200(1.08)) + 300(1.1)
0.75(150 + 190 + 275.4 + 156 + 208 + 296.8 + 162 + 216) + 330
0.75(1654.2) + 330
1240.65 + 330
1570.65
Rounded...
1571 Potency
So, unless my math is wrong, WAR and MRD, in their respective rotations, only have a 19 potency difference. So that "200 Potency" that MRD rotation outdoes WAR by is more like 20. And that's BEFORE calculating the minutely higher stats that WAR has, which would lower that gap a little further. Considering MRD has Raging Strikes and Blood for Blood, as well as Internal Release and Strait Shot, in addition to all of the same burst CDs that WAR has, MRDs damage in CDs will definitely pull ahead. However, outside of those CDs, WAR's DPS is almost exactly as potent as MRD.
The only thing I willingly avoided factoring in was the potential to work Strait Shot into MRD's non-burst rotation, as I'm not 100% sure how the math would work. Yes, it would give MRD a sustainable 10% increase to Crit, just like a full stack of Wrath, however, unlike Wrath, it requires one GCD every so many seconds to keep up, and has fairly low potency, and I'm not sure how that would effect overall DPS.
If you're trying to focus on AoE as a WAR, then you don't need the WAR Job abilities or Wrath, as you'll mainly be spamming Overpower, which does not give Wrath, if I recall correctly. Nor will you need Defiance, because you shouldn't be spamming AoE if you're being focused (and thus need the defenses), anyway. For AoE purposes, the only thing I would use Defiance for is the build up 5 stacks of Wrath for the initial Cyclone which would be used after all my offensive CDs (and then a second Infuriate > Cyclone). Then I would turn off Defiance and spam Overpower until I'm out of TP.
I'll concede to you in that WAR is not better AoE DPS than MRD, because I forgot to factor in Invigorate last night. But even so, WAR's potential AoE DPS should be similar to MRD's, probably only less by 150-200 potency overall.
I can't argue this, though. :P
Is there some math behind this that I don't know about or is this just by personal experience? Not trying to give you crap: serious question.