As he said the entirety of both universes, while completely unfair they are still included in the halo universe. But it's similar to the Marvel vs DC argument. DC wins if it's low to mid tier hero's such as superman and martian manhunter vs hulk and iron man, but higher tiers marvel dominates with galactus and others similar. It's a matter of which tiers of the respective universes you talk about. If you don't include precursers then star wars dominates. But including precursers, halo dominates.