Easiest in terms of genetics and attainability was what I meant.....not in terms of "odds".
Most people making killerbee axanthics are going to do so het to het or maybe pastel axanthic to bee het axanthic....if anything simply because due to the sequencing of production people will have a possibility to produce killerbee axanthics sooner if they breed a het pairing instead of waiting until they have homozygous axanthic on both sides.
But I agree....if you just wanted to make them in sheer numbers with the best odds the best way would be something like a super pastel axanthic X a bee axanthic (or even a killer bee axanthic)