Yoshi P talks about Warriors- from Producer Letter Live @ TGS

[Derza]

Just like to point out that having our self heals scale based on Max HP would scale better. Assuming you get hit for 1000 per hit with 5000 HP you are taking 20% of your HP per hit. Using his example Inner Beast would heal 25% OR 1250. Now say you geared up some more for VIT and your max HP is now 7000 and you still get hit for 1000 because your overall mitigation hasn't changed. The monster is doing less % of your max HP per hit now while your self heals still scale off your new max HP. So you are receiving less HP% damage from the monster while increasing your HP% recovered through heals. Monster would only hit for ~14.3% of your Max HP while Inner Beast still heals for 25% which is now 1750.

Just by sheer virtue of increasing your max HP you are lowering the %HP damage dealt by a monster.

Its the same thing as you can do now... Increase your damage output increases your self-heals, the only difference is you are basing the healing on max HP and the % of damage a boss does to you. You are still taking the same amount of damage no matter what the % of you total HP it may be. So as far as incoming heals are effected its a wash...(sure your way your Max HP gives you better self-heals so now you are 100% vit dependent vs being damage dependent, still does not change the fact that you are still stat dependent and your mitigation only scales with your stats where paladins mitigation scales with boss damage)

They really just need to give warriors +25% healing (either by adding a 10-15% base% heals on defiance and leaving wrath the same or moving it all(+25%) to defiance so we can at least start at the same point as paladins (as far as survivability from tank stance).