I think +2 for BBBJTCIMS is generous.
I think that given the number of BBBJ providers out there that perhaps one should get a 10% increase. And maybe an extra 10% increase for swallowing.
So a score of 6 +0.6 (for BBBJ) + 0.6 (for swallowing) = 7.2
But this adjusted score doesn't even factor in personality, attitude, service, and rates. Obviously strong showings in these other areas may help to boost the score.
Then you also have to provide a special factor with those with a specific fetish that these two ladies provide (e.g. maybe you get turned on by youngish girl next doors with too much make up on).