I agree that classing is biased. Classing should be based on the elements that went into the work and what I mean by that is the knowledge of photoshop.
I or you or anyone may know everything about photoshop and may just not have good ideas to apply their knowledge. Style is changing a lot and will always change. You can't really base someone's class on their outcome. The only thing you can really do is critique them judged on the current style that appeals to most.