I would say that PSE adds the option of cum on anything, probably adds Greek (even some porn stars don't go there) , and expands the normal boundaries to allow for rougher, more self centered activities. PSE implies an attitude conducive to enjoying these activities, to the point of encouraging them.
It also implies that cameras / video are on the menu. Lets face it, that is the main defining characteristic of being a "pornstar". If that's not on the menu, all the COF and Greek in the world doesn't make it porn.
The downside is, I'm pretty sure there's no warm towels in PSE.
So here's my question...
When you think of "PSE", do you think of it as the experience of BEING a pornstar, or the experience of DOING a pornstar?