CoD and BF are effectively the same dish cooked by different restaurants, why shouldn't they inspire each other? There's nothing wrong with being inspired from good game mechanics, which there are a few in CoD Warzone. In fact I often wonder why games take steps backwards when well established features from a previous generation of games are removed in a sequel or new competitor. The accumulation of well regarded features and game mechanics is how you keep a games moving forward - I'm not talking about bloat, (I'm looking at you warframe) but little things like hit confirmation markers or being able to scale fences and walls of a certain height.
I actually found myself missing the lean/cover/mounting system from CoD Warzone.
But 2042 guns feel really good, a lot better than CoD Warzone, and the graphics and scale are very impressive. As are the vehicles. That battlegrounds mode in CoD feels very artificial, and basically a bad version of Battlefield. CoD's strength is close to medium range infantry combat. Battlefield has always done large scale very well, and it goes next level in 2042.
I still feel like vehicles should be far harder to destroy in Battlefield, but they should also have a logistics component of ammo, repairs and perhaps fuel. Some vehicles should be used kind of like the way heroes are used in MOBA's.
I also really liked how Planetside 2 allowed you to buy vehicles with resources and importantly you could lock your vehicle to prevent theft from random's in public servers.
"Money doesn't exist in the 24th century, the acquisition of wealth is no longer the driving force in our lives. We work to better ourselves and the rest of humanity." - Jean-Luc Picard