The win conditions predate the specialties. Originally there were no specialties, and the win conditions were:
1. Conquer 50% of the HW systems.
2. Research up to build a device that destroys the universe
3. I forget the other, we could never figure out how to make it work.
Specialties were then introduced and it seems that I overlooked that normal HW conquering is not part of the warlord win. I know that pkills are recorded as a separate statistic, so I'll just have to correct the reporting of the win condition score. Unless it's a client bug.