I'm not so sure i would consider B/G to be a tournament. It is more like a showcase where kids are brought together with out having had the benefit of training together. Just playing games with a winner takes all, does not make it a tournament.
The PG showcase has the the skills portion, plus the games portion which would be similar to the B/G games. They just don't have an elimination format.
WWBA is a tournament. B/G format is not like WWBA. I'd like to see the winner of B/G play the winner of WWBA 18's or the WWBA World Championship. There's a reason the scout interest at those events are unparalleled.