Even when what you show really is what you have and what you will deliver you won't get away from being called a liar. One AAA game I worked on released a trai

Even when what you show really is what you have and what you will deliver you won't get away from being called a liar. One AAA game I worked on released a trailer for E3 which we were really proud of. Our game looked amazing and that's what we showed. The trailer was recorded in game. The only "trickery" was custom placement of some cameras and rendering to a 4K backbuffer and downsampling (which the final game does support on PC, anyway). Despite the trailer being rendered in real time on a relatively powerful gaming rig using the actual game, the YouTube comments were flooded by people being angry at how this was obviously fake because it cannot look like that in the final game. There were even people explaining why and how this was obviously fake.