The shape is the shape that the player comes up with through the system. An offset edge on a B3 happens when the player wants a high middle, but low edge profile on CAD system. They're not promoting it widely as 'the high performance offset edge profile' it just happens to be a profile which comes about from their various options.
You'll notice the DB1, DB2 and DB3 (their stock shapes) don't feature the offset edge profile, so I can't see it as them ripping Andy off.
More a series of events, which a player can choose which culminates in a profile similar to one that a batmaker on here created.