If you provide us with the art or a exported version of the level, sure why not? I'm not sure if it would run 'out of the box' or need adjustments to get good fps, but basically it shouldn't be impossible. Needless to say someone should do this to prove it I guess.
Just do it.
And regarding the questions towards resolution, game-play, fps and all the things coming up in every such discussions: This is a pre-alpha video. It is even a leak of an internal video. The demo is not finished and there will come something bigger at GG as far as I know.
