Fatherhood has been a lot better once I got a nanny!
From what I understand, Joe did not promote John to black belt. John got his black belt from someone else. In BJJ, once you are black belt for certain amounts of time, you get degrees on your black belt. Degrees on a black belt have nothing to do with skill on the mat. It is only based on time in the art. I believe Joe gave John certain degrees of black under Joe's BJJ federation, but I'm not what degree was given.
I think Joe differentiates between promotions give by Joe Moreira himself and degrees given on behalf of his federation. For example, I saw Joe give Rey Diogo a degree on his black belt on behalf of his federation since Rey is under Carlson Gracie.