As a faction leader I can assure you that there is no bias toward me or mine.
I would however say that admins can be susceptible to misinformation by those who know how to abuse the system. They're people too, and often times screenshots can have chatboxes carefully scrolled to only show what the submitter wants them to see. If that's all the evidence they have to go on, then they're faced with either acting on what could only be half of the story or not acting at all.
This can be mistaken for bias, which it is not.
Plus, most are experienced at sniffing out grudges and are amping up efforts to find ulterior motives for submitting the report: is the violator actually being reported for the sake of the server, or is this a means of harming the reputation of and shaming the player/faction?
My own standpoint is that people will do what they want to do. If my presence and actions offend the sensibilities of someone, I take criticism with an open mind and accomodate wishes where i can. If someone still sees enough issue with the actions of myself or those I associate with that admin intervention is deemed necessary, I only hope my own reputation and record is weighed against the offending action.
On this topic: I'm seeing much less shut-in no-life hermit paranoia and "Do it the way we've always done OR ELSE" political dealing than I did when I started here. This pleases me, either the losers are being weeded out or people in general have smartened up.