Now I know he's a big fan of telecasters. To me, the characteristics of the Jazz/JB combo is similar to the two pickups in a telecaster.
In a telecaster, you have a relatively weak but clear neck pickup, and a strong bridge pickup with a biting tone. Same as the Jazz/JB combo. Albeit, the Jazz and JB are both much fatter sounding because they are humbuckers, and the jazz is more usable then the neck pup of a tele. Also, they are clearly not PAF copies, which have always been popular with players.
So what about it Seymour (or official Duncan rep)?