There are those (and I'm one of them) who don't think that Jeff's more cryptic stuff is so great. "I am an American aquarim drinker/I assassin down the avenue"? Um...OK. (Please don't hurt me)
You have no idea what you're talking about. If these hadn't been mastered, the volume of the individual elements would be all over the place. Not the case, just like the AGIB leak wasn't demos. This is the final product, its just a shitty MP3.