I think there are different views on Quality.
You mentioned Amateur Paul, which is a niche that i myself actually like, as a surfer. In my own personal opinion the quality is actually just semi decent in my own vision of this niche. Meaning, that a girl with a decent quality webcam, an 'ok' camera, say 5 mega pixels, that she herself shoots or her BF, etc, really adds realism, and MANY people enjoy this.
QUALITY wise, it is way down the ladder, compared to say High Definition, a Canon 20D, etc.
Then there is Quality of the way the site is organized, it's user friendliness, and so forth. That i think leaves very little room for argument. It should be top notch at any level.
I once had a review site give poor reviews on
www.katiefey.com - because he felt she was not hardcore enough.
Her niche is erotic nude, with some amateur, home made material. Which i myself like.
So i guess it all depends in terms of content, what the surfer is in to and if the 'quality' of the images and video is less than the highest out there, well it sometimes lends a hint of realism among other things to the site and experience, and that has to be considered.
Such as GOTH dark, shadowy photos... as another example.
Same as touching up photos. Removing stretch marks, bruises, mosquito bites (lol) etc... is one thing. Some people go overboard and gloss the hell out of some of these images, making the model seem impossibly perfect. Which i myself think is a whole other niche.
Just examples of where i think Quality can be interpreted differently.
