Battle Howl, War Howl, Combat Howl... any difference?

Can anyone please explain what is the difference of the following skills?

for Battle Howl:
Loudly scream to reduce the Defense Power of nearby enemies.

for War Howl:
Loudly scream to greatly decrease the Defense Power of nearby enemies.

for Combat Howl:
Loudly scream to damage nearby enemies and reduce their Defense Power.

i can't see any difference from it
thanks in advanced for the explanation

for Battle Howl:
Loudly scream to reduce the Defense Power of nearby enemies.

for War Howl:
Loudly scream to the Defense Power of nearby enemies.

for Combat Howl:
Loudly scream to damage nearby enemies and reduce their Defense Power.

gintokii wrote:for Battle Howl:
Loudly scream to reduce the Defense Power of nearby enemies.

for War Howl:
Loudly scream to the Defense Power of nearby enemies.

for Combat Howl:
Loudly scream to damage nearby enemies and reduce their Defense Power.

thanks, i think i get what you meant
so, can i describe in this way? =>
War Howl [greatly decrease] is an advance version of Battle Howl [reduce], while combet howl is function as [damage + reduce defense]

so, is that means i can give up on the War Howl skill? (if i already have Battle Howl and i doesn't care much about the "greatly decrease"?)

thanks

lol i dont really know but. they all work differently well this is just a hypothesis but

battle howl Reduces the overall mount of defense <meaning alt + a that defense>

War Howl well i dont really know it could be the same as battle howl just put in different terms i mean if you already have war howl no reason to switch to battle howl

Battle Howl just reduce ammount of defence, but we don't know how much, War Howl will reduce the defence more than Battle Howl by maybe usually 5-10%, and Combat Howl will damage all nearby enemies AND decrease their defence(it will decrease defence more than battle howl and war howl decreases defence)