Well, having now smoked BBF and Capstan Blue back to back I can say that while they may fall from the same tree, they are very distinct. Capstan Blue is cleaner, earthier, and a lot more straight forward. It's also a lot more consistent.
BBF is a different animal altogether. I totally get why folks might consider this a dull or a one note tobacco, and why it's often referred to as a pita. That said, with the right pipe and the right environment, holy cow...this is quite possibly the world's finest tobacco for my tastes. It's fascinating to see how the various VA's shift throughout the bowl, each distinct yet subtle. Milk chocolate, a hint of orange brandy, with an overall note of brown bread with rich, dark stewed stone fruits. Amazing stuff. This is what FVF wants to be when it's grows up!