| Furako |
I can just make an assumption, usually paladin don't have any skills that increase weapons bonus, correct me if wrong.
The Divine Defender can use shared defense to increase his armor bonus for a number of rounds equal to his CHA modifier.
So, a level 20 paladin can have a +6 armor bonus, with +3 to CMD, +3 to all saves, auto-stabilized if fewer than 0 HP or less, 25% immunity to critical and snake attack (not cumulable), immunity to bleeding and armor bonus +3 to give special capacities to the armor.
this seems pretty strong IMHO, even if you have to use 2 standard action to activate both ^^; oh, and by the way, those bonuses remains even if the paladin is unable to fight, if still alive.