Match by map packs?

I never understood why Halo didn’t match you with players with players who had the same map packs as you. In Call of Duty, it will only match you with players who have the same maps, and you can choose to disable the DLC if you want to play with people who didn’t have them. But with Halo, you never see the DLC maps. I feel like I’m taking a gamble with buying the LE for Halo 4, since map packs for Halo haven’t really been worth it, especially after the removal of the DLC playlist. I hope they will change up the matchmaking system.