If a provider says she is a PSE or a GFE, what is the difference?  I know that there is likely to be some disagreement about all that constitutes PSE but can anyone basically distinguish it from GFE.  Some have said it is nothing more than a session with someone that's been in porn flicks but isn't there something that goes on during the session that makes it experiencially different?

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I'd just like someone to tell how a Porn Star Experience differs from other "experiences" in the hobby.  When a provider advertises a PSE, what will the session be like?  I realize YMMV but I'd like to hear from other hobbyists on this topic