What all will be accounted for where the pk ratio in concerned? If someone dies to your bleeding/maeldiction will this be counted as a pk win for you? I'm asking because I remember looking at some outlander bard's PBF awhile back who had a high number of wins yet people were complaining about him using only fiend. I'm assuming because of this that fiend counts as a win. What about rot? What else counts when not engaged in combat?

It counts aslong as its your skill, sup, spell, whatever that nail the kill. This apply even if your not in the room with him. For example a necromancer gets the PK kill if his poison and scourge kill his PK target. Bard gets if fiend kills. Bleeding from dagger/spear specs aswell.