NO site has a perfect set of mods.
But this site gets an A- minus for trying, imo.
What seems to cause a problem is, on some forums mods and Admins won't really post other than to warn people about stuff, and don't actually show their positions and opinions. Here you have staff that are active in conversations but also have power. It can be a difficult balance, think about it like this. Think of a boss who likes to fraternize with their workers. They go to the bars and stuff with them, well then a worker calls off the next day because they are sick from drinking too much the night before, and then the boss doesn't accept their excuses and punishes them for it. It then causes conflict at work, and that same principle happens here.
Mods should be like judges. Know the law (rules) and apply them equally. The problem comes when such application is in a subjective area. Then personal bias comes into play. Also, they have to interpret each incident relative to the rules and the good of the board. This is an economic enterprise and its survival must also be taken into consideration. Moderating here is not as easy as it seems on the surface.
That's one reason why we have a team approach - so it's not a one-person tyranny. We can talk actions through, we can disagree, we can change our minds - if someone is unhappy at one of us, they can approach another. Bias is impossible to eliminate - we're all human, and we see things through our own unique lens. But a team approach helps to reduce bias imo.