The E3 demos like for the Division and the Witcher 3 are almost always either completely canned footage (some dude on stage pretending to play a game), or real time footage with as many performance taxing elements (like the A.I) removed that they can get away with without anyone noticing, whilst leaving all the eye candy intact.
And whilst PCs exist today that are capable of running both the Witcher 3 and the Division at E3 quality, those PCs are very much in the minority. It would take a high end SLI machine with an Intel hexcore/octa CPU to run the Division at E3 quality, and even then 60 FPS isn't assured because DX11 limits the processing power that is available..
From what I can tell, the E3 version used dynamic global illumination as the main lighting source, had much more detailed geometry, more objects in the scene, more detailed shaders..
I could let it slide if they take it easy with the reveals to begin with. Obviously the game can look a lot better than it does and in 2016, for a lot less than it took to run in 2013. It doesn't happen often but games have been disabling settings if hardware can't run it.
I don't have a PC that could run it properly, assuming it takes a 980ti to run Division @E3 settings @1080p yet I would still welcome others to have the option since they have the hardware. PC games used to have uber settings without people getting uber mad about them.
I remember when gamers had realistic expectations from hardware. I didn't run Crysis properly until I bought a 7950 and I didn't spend the first five years of owning the game crying about it either. On the other end of the scale, I played Far Cry with my 7800GT SLI setup but I always knew that no matter what, a game will come along and crush my hardware.
The console angle unfortunately makes sense. 4K single GPU arrives with Volta, consoles will wait until a 4K GPU is cheap enough for a $400 box. I'm hopeful this disparity until next consoles catch up can attract a project to show it off. At some point, the publishers should get tired of enforcing parity, especially with this gen. Still, AAA games aren't likely to break the ice with pushing PC but The Vanishing of Ethan Carter came out of nowhere, maybe more do so in the future. I still expect COD sequels to drop frames regardless of hardware but some studios will take advantage.