Interesting that you mention that. I've always thought that, the scenes we get (for bonus from ABFT) are scenes that would otherwise be "shelved" or used as fillers on the regular site. Case in point; many of pairings of models I've noticed, have either done scenes together on a particular site, or have appeared in scenes from a site I've viewed. The camera angles and the quality are almost "amateur" by comparison to the actual site from which they come! That's just my OPINION! As you know.....I do get around!
BTW: Hence the name: "Amateur Boys......"