CB rendering is nothing like DLSS other than they both try to resolve a higher resolution from a lower one. The implementation and technique are very different.
As for Halo, I will hold my judgment until I play the game, but from a technical angle, it is a really disappointing game. Especially compared to the Slipspace engine demo of 2018; The lighting has been massively downgraded, the environmental variety is pretty much nonexistent, the vegetation is so lifeless, explosions cast no dynamic lights at all... it's just an effect that doesn't affect its environment in terms of lighting, there is still pop in if you look closely, the part where it shows MC jumping down and transitioning from cutscene to ingame while facing the ground, the motion blur is frankly embarrassing. So I agree with
@Dictator here. It's an extremely disappointing game from a technical perspective. Even the "stage/level design seems lacking". The part where the Chief was to destroy the Banished salvage operation just looked like something created in Forge. Also, they seemed to have ramped up the contrast to try and bring out more detail without actually adding more detail.
I will reserve my judgment on the minute of the game but what I have seen so far doesn't inspire confidence. With all that said, I hope the story, gameplay, and world/level design are very good and better than what they have shown so far.