You can see why the general public would find that difficult to distinguish since CIG clearly book that in conjunction with Gamescom to both tie in and take advantage of. Hence the live stream is titled "Gamescom presentation".
Funny how the media also don't seem to make any
differentiation as there are numerous examples of them treating this as a fully fledged Gamescom demo and you yourself call it a "Gamescom show".
So what your saying is this is a special side show where
CIG can show off any smoke & mirrors stuff they like and
not abide by official rules of a trade show?
If it's nothing to do with Gamescom then they shouldn't use the "Gamescom" brand and should caveat it clearly not to confuse fans, casual observers and the press. It's certainly not appropriate in conjunction with their crowd funding activities that accompany these demonstrations.
Looking around at CIG fans commenting elsewhere, I would say that there is a general feeling that the stuff shown was
at Gamescom and is
not proof of concept so it's interesting that this "open" developer has left us all so confused.