warrior 2pc T4 bonus
"You have a chance each time you parry to gain Blade Turning, abosorbing 200 damage for 15 sec."
instead of the 200, i have been seeing 256. Other guildies have noticed the same thing.

warrior 2pc T5 bonus
"Each time you use your Shield Block ability, you gain 100 block value against a single attack in the next 6 sec."
normal blocks were going for 635, once i used shield block i was getting 765.

[edited for T5 findings]

I'd laugh if it was improved divine spirit, shaman totems, or debuffs like misery.

good point, yes we use shadow priests. i will have to test it out w/o a shwadow priest to see if im stil lgetting the same effect.

any clue as to the 2pc T4 bonus getting extra values added to it?

Tree form?

Hmm. The only other thing I can think of is imp divine spirit.

TF is being affected by misery.

Divine Spirit gives 40 spirit, and assume the base spirit a Warrior has is 50. So he has 99 (kings)*.15 = +15ish damage. Maybe he had Wrath of air or some +damage aura as well.

Perhaps the T4 bonus is also being affected by +damage?

It is damage AND healing on most if not all of those buffs. It's possible the proc uses a modified PW:S mechanic and +heal from those buffs affect it.

Though I must admit it is kinda weird that there would be a spell damage totem down in a warrior group.

warrior 2pc T5 bonus
"Each time you use your Shield Block ability, you gain 100 block value against a single attack in the next 6 sec."
normal blocks were going for 635, once i used shield block i was getting 765.