If you don't think there is a certain sound that the reviewers on this website gravitate to (as a whole, obviously there are exceptions to the rule) than you clearly aren't reading carefully enough.
Most reviewers review the kinds of album they normally would like or listen to. None of the staff reviewed Hollywood undead, nobody listens to them. Drew for the most part reviews the majority of bmth and stuff like that, etc. There isn't any bias for almost all reviews that I've seen.