Murderous rage be used on people without Murder ability?

[Narski]

NB: Do note that these changes imply that more or less anyone can be killed at any time. The total percentage amount of griveous damage which can theoretically be dealt in one combat engagement is ((Weapon Max Griveous Damage% + 20% from Murderous Rage) * 2) + 20% from a maximum concussion.

I read this and am not understanding quite right i think. Is this the total damage that can be dealt to someone without Murder ability, or is the Murderous Rage only applicable to people who have the Murder ability?

[vatas]

As far as I understand it, no skill you unlock directly increases the chance that you die. Unlocking Murder allows you to enter "murderous rage" which makes you deal more HHP damage (making it easier to kill other players through KO protection) but it will disable the your own KO protection.