I wasn't aware of that as I don't keep up to date with that game. However, I can guarantee the visual quality of 2042 is a step above Warzone. There's simply less going on to make everything look nice because the details are not the same.
I'm more aware the engine for Warzone will be more performant than Frostbite. Probably because it's simpler and most of its features aren't a WIP at any given time. I don't doubt that EA/DICE will be writing just as much engine code as game code to keep up with the upgrades they try to present with these games. Moreover, no one asked for 128 and from a player perspective, you won't be able to notice much of a difference. I doubt anyone wants to run at half the frames just to see a couple more explosions and helis flying in the distance. This isn't good game design.
The data per tick rate has doubled, which of course will degrade performance and all networking stuff is of course, CPU driven. Hmm CSGO can do that because literally everything on a given map is static. You don't even have to synchronise bullets because they don't have physics. They are implemented using Hitscan which costs nothing in comparison to 2042s simulation. COD used hit-scan until Modern Warfare (2019).
It all comes down to redundant and overcomplicated code. Frostbite is probably massive and overly complex compared to the likes of COD. You have to think about what games it's shared accross. Fifa, BF, Madden, NFS...
Not enough thought goes into larger games these days because they know they can get away with it. I would not work for a AAA like this which doesn't get to independently create a game they want. It's all money-driven.