I know of numerous providers listed in general review section whose services are massage-only. However, a review I wrote about a massage-only agency provider who does incall-only in hotels, never in massage parlors, was listed in the "parlor girls" listings. How is this decided?

I can't get an answer from 69 people who have read this? There are separate listings of "massage reviews" and reviews of "massage parlor girls" and in some cases I can't see the distinction. TER directed me to the Discussion Board to learn the secret. Does that make sense?

Since AMPs tend to be the cheapest hobby alternative  (normally $40hh/$60hr +tip) TER would be inundated with these kind of reviews if they allowed VIP credit for them.  Generally, most AMP providers do little more than HJ or CBJ with their clothes on.  Many are staffed by non-English speaking RAs so the experience is sort of minimal compared to a FBSM provider who usually provides more services at a higher hourly rate.  They also tend to be a little more interactive than massage parlor sessions.  
See, inventing the internet has given me more exposure to knowledge than the average uptight political asshole.

So where does the review of a massage parlor girl who, after the massage and tip, removes her clothes and gives a CBJ and FS go?

Finally, someone hit the nail on the head. The massage-only provider I reviewed (Jasmine) works for a fine agency, massages nude, is very intimate from the beginning with lots of body to body and, when at ease with the client, permits intimate touching, and donation is $200/hr. Yet, TER insisted on listing her with "massage parlor girls" which is ridiculous. What massage parlor has TER been visiting? The entire city wants to know.

But I am not sure that I did hit the nail on the head, because you just described, pretty much, the experiences that I have had at AMPs, minus the table shower and a little more expensive.

You should go to AMPs in DC.