Ok i think there might be a little confusion. Homozygous = super, in snake lingo. Red axanthic = homozygous, het red axanthic = heterozygous. You could call red axanthic a super het red axanthic if you really wanted. You need a het red or red to make other het reds. That much I do know.
Now if het reds = BB and how the projects are related, I have no idea. Hopefully someone else can fill that in.
*edit* this is whats on RDR site....
The Red Axanthic is the homozygous ( super ) form of the Black Backs ( visible hets ) that produce it.............breeding two Black Backs together from this bloodline will produce the super form.............The Red Axanthic. Corey bought a pair of really nice Black Backs from The Snake Keeper some time ago...........he bred them together and produced these beautiful Red Axanthics.............I bred a Red Axanthic ( homo ) male to several normal females producing all Black Backs or "het Red Axanthics" in 2003. The Snake Keeper had no idea what they had when they sold the original Black Backs to Corey.
Het Red Axanthics are the proven line of "Black Backs" needed to produce the homozygous "Red Axanthic" ( The Super )