If A providers offers bbbj and greek, and you partake in those activities, and do not complain about either in your review, what is the lowest score on performance should she get? Just curious? Myself I figure a 9, unless she bit me, had stinky butt or dingle berries.

Well it seems like some guys expect BBBJ to be provided and it also seems to be the norm (unless otherwise stated) so I don't know if that alone would get a high score.
I myself never expect it. Its great when its provided though. I've also had some great CBJ though so it just depends.

But IMO, If the rest of the M&G was good, then I think Greek would be a HIGH score alone because that is not something that is the norm or usually experienced.

If it were me and I experienced Greek and the rest of the M&G was great then I would give it a Ten because that is a once in a lifetime thing.
Again, just my opinion.

IMO, the BBBJ is common, and I don't necessarily add a point for that. I had given 7's to a few providers who gave me a BBBJ.
Greek is less common, so I may value an extra point for that.
However, I would never guarantee a 9 simply because those services are rendered. If the attitude and vigor are not present then their score will be adjusted accordingly.
I tend to rate the entire session, not just a couple services.

Best response, IMO

Giving ratings based solely on services provided is definitely one huge flaw in the 'system'. It absolutely explains some obviously inflated scores.

To each their own....but I believe a rating should be based on the overall experience of the session.
Giving a higher score simply because she gives up the booty is....'ass'inine.

There is not a set scale.  To get the 8 9 10 rating those things must be offered. That does not earn a rating in its self.   Just because a restuarant serves fancy exotic dishes does not give it a five star rating much more goes into it.  The service, attitude, the ambieance of the room and the overall experiance. But then thats just Me.

These services can be offered and other factors may still make it a 6 or 7 over all.   For instance, if she slept through the entire session, I automatically deducted a point.  If she called me Upncummin52 during our appointment, I also deducted a point.  The point is that there are other things that warrant points or lack of.  The best thing to do is read the reviewers other reviews and see what kind of scale he is using.

her performance is above average she earns a 7.  If she offers any of the +1 menu items and her performance is very goot to excellent (or maybe off the charts), then I consider adding points to the score.  I think in over 8 years I have given out about 4 or 5 10's for performance.

Appearance scores are based on level of hotness which varries from guy to guy.  What may be one guy's 9 or 10 is only a 7 or 8 in someone else's eyes.  Beauty is in the eye of the beholder.