Guild Wars 2

Badges of Honor are your primary reward currency for killing other players.

How come then that their acquisition seems so completely random? Overall I’d estimate that only about 30% of players killed by me (or enough that I get XP for them) actually drop these badges.

Then again, some players even drop two at once.

Is there some sort of logic regarding the Badges of Honor loot? Is a player only worth them if he/she has lived long enough? Is there any kind of system to it or is it just completely random?

If there was logic it would be gamed

Random. 1/5 kills is a good estimate. But join a zerg/commander and you should want not for badges.