Wait, is your argument honestly "it's not cheating because they just trusted the students"?
There's a huge difference between demoing something as "this is what we did" vs "we didn't quite get there, but this is what we're envisioning."
Edit: You all are responding very weirdly. The cheating is because you're presenting "something" that is not that thing. Put a dog in a dress and call it a pretty woman and I'll call you a conman.