Regarding a death is a death is a death &c...
I disagree. Why the person kills seems to me to be critical. There are many reasons why Avon might have killed Blake, some plausible in the light of the characters of the two and the way the scene is played, and some not, and I could ascribe different moral values to the different motivations.
For example, killing someone for no reason other than enjoyment of pain or power seems to me less moral than killing someone who happens to be in the wrong place at the wrong time.
This is something that came out in the 'Blake: freedom fighter vs terrorist' discussion at Redemption, and is also a point I've tried to make in fanfic.
Tavia