Here is a video showing Doom 2016 and how much it improved since E3 from 2016 to launch. The amount of work that went into the overhaul is amazing, and so unexpected, Bethesda definitely raised the bar on this. Just for clarification I did not make this video, I'm only sharing it, please subscribe to Crowbcat he makes amazing introspective analysis videos on games and developers.
Crowbcat's description:
"How did the final game really compare next to the E3 presentation which usually tends to be downgrades this generation. People still argue over some differences, but there wasn't any comparison available to see yet. DOOM ended being a very solid game and undisputed GOTY contender, id Software didn't fail to deliver after many criticism and doubts before release."
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~Cornflakes23