I think I understand what Anton is saying, I was wondering the same thing - it's odd that with the ROTS wave we get a B-A-D like the YVH-1 which is an EU creation, while with the actual EU wave, we get a droid that's actually in the background in ROTJ.
I would have thought that Hasbro would have tried to keep the theme of the wave going on into the B-A-Ds, but from the very beginning, that has not been the case. In fact when you think about it, we've probably gotten more EU droids out of the B-A-D concept then we would have through individually carded releases or EU comic packs (if those kept going).