Sorry dude but lol.
you know they're making FF16 in UE?
there's a lot of work that goes into making a native PC port of a UE game still, but you can also throw a 4090 and 128gb of ram at it and render out cutscenes. You can actually do this before you've even figured out how to get the game to run on the devkit. That doesn't mean the game is playable on windows, the first trailer was just cutscenes rendered out at 1fps from the editor. That's what he meant by running the game on the engine. If you'd ever used it you would have understood what that meant.
https://docs.unrealengine.com/4.27/en-US/AnimatingObjects/Sequencer/HowTo/RenderMovies/
It's mostly used for internal reviews and feedback, but can also be used to cut a trailer before anything resembling a 'game' is running.
All of this flexibility is the main reason WHY devs use UE, and more and more of them are switching. You can start building scenes, lighting and animation before anything is ready to push to a console.
GOW was not made in UE.
I would bet money they will make a PC version. it's kind of dumb not to if you used UE. but it won't be out in 6 months (maybe 18) and it won't have had any real work done to it to make it playable.
maybe try and be a bit less cocksure about things you dont actually know about. a lot of people on this forum work with this stuff daily...