Again, great post. That's a great way to equally compare both classes in order to see where Warrior is lacking, to see if it's even possible to bring it up to snuff with Paladin.
My Warrior testing so far shows using LT Labyrs with 367 STR I will have 57.525 DPS Mitigation (only Inner Beast @ 20s)
With Bravura and ~427 STR it could reach ~78 DPS Mitigation
Depending on Crit% say 50% with stacking Crit Rate you could reach 97.5 DPS Mitigation
Adding Buffs (Maim/Storm's Eye already Included) Berserk, Second Wind, Inner Release etc would push it to ~170 DPS Mitigation - But you would still need it timed to not waste any overheal.
How much would the extra 8% (average) healing account towards damage mitigation? @ 1200 heal per GCD it's ~ 38.4 DPS Mitigation
So between Warrior and the heal bonus it would be ~208 DPS Mitigation, which still doesn't match Paladin's max of 300 given that that's accurate.
That would be sacrificing enough HP that Warrior in Defiance would have about the same HP as Paladin.
Crit Rate Testing would need to be done to see how it scales on Inner Beast (I'm probably being generous @ 50% with Crit Gear on Inner Beast) + Average HPS would greatly infuence the results 1200 @ 2.5s = 38.4 and 2000 @ 2.5 = 64