Does Human W. and PP skills stack?

I'm playing a Human Warrior, who has some skills that does the same as my Prophet skills. The question is : does the Human Warrior skills and the Prophet buffs stack?

Human Warrior : Vicious Stance // PP : Death Whisper
Human Warrior : War Cry // PP : Might
Human Warrior : Accuracy // PP : Accuracy
Human Warrior : Battle Roar // PP : BtB & Regeneration

As far as I can see they do stack, but I'm not compleatly sure about Vicious Stance.

Also what does the lvl of Vicious Stance do?. Does it increase the damage done during Crit, eg.
Vicious Stance lvl1 = 2xdamage during crit.
Vicious Stance lvl2 = 2,5xdamage during crit.

Thx for all your replies.

Toggle skills like Vicious Stance always stack, I don't think any skill of this kind can be overwitten by a buff from another person.

Still, Vicious Stance is rather something like 10% more damage, not 2x. It probably does more damage on higher lvls, but not much.

All in all, it is quite a useless skill, except maybe in 1v1-pvp where every little increase of damage counts and the fight will be over before your mana is empty anyway.

I don't know all the other Skills, but self-buffs are often replaced by prophet buffs, definitely so for war cry. PP does not have an accuracy buff though.

Still, Vicious Stance is rather something like 10% more damage, not 2x. It probably does more damage on higher lvls, but not much.
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no. VS is fixed dmg + multiplier.

no. VS is fixed dmg + multiplier.

OK, whatever. It's not very much in any case.

Ok, thx for the reply.

I was mis-writing, the PP doe's not have a "accrucy" skill but it has the "guidance" skill that adds to accurucy.
So does the HW "accurucy" stack with the PP "guidance"?

Ah, Accuracy, right... I confused something there.

Accuracy is also a toggle skill like vicious stance, so yes, that stacks. And just like VS it will use up your mana in no time...

it's a lot for dagger specials. dunno about the c5 double shot for archers.

battle roar and btb dont stack. VS is good with high end weapons. being that your normal hits can fluctuate 10% too. VS is barely noticable. when you get to high-end A grad and S grade wepons, that 10% increase becomes more noticable.

And just like VS it will use up your mana in no time...

hehehe .... yes I see that :) , but the good thing is that I have a lvl58 SE to oop recharge me, so I never lack of MP :)
2xrecharge and I'm at full MP (in lvl28).

Yeah, I do about 1.5 more damage with my dagger skills when VS is toggled. Not really worth it for a Human warrior though.

At LvL 50, my Hawkeye never uses VS. It simply doesn't add enough damage to make the drain in MP worthwhile. I could see using it in PvP, When I crit with my Emi Bow it adds Maybe 10% if i'm lucky. In PvE, MP is Very important to us archers and both VS and Accuracy are a big huge waste of it.