Jesus Christ. My Atari 2600 Superman game had a cartoon of Superman on the front of the box, but only a pixillated blob in the actual game. You didn't hear about people demanding a refund because of that. Of course the advertising lies. What kind of surprise is that for anyone?
That the game wouldn't look as good as the cartoon should have been obvious to every Atari 2600 owner. However, what did happen in the 80's is that a game with ports to multiple computer systems would have screenshots on the back of the best looking port, not of the port that was actually in the box. That was misleading, in my opinion.