From the PlanetPlaystation.com featured top 10 list:
"Live action videos–those that use real actors, costumes and sets–occupy an odd space in video game marketing. They potentially titillate viewers by capturing the spirit of a game, even if the video isn’t rendered from in-game engines or even indicative of actual game play. Live action videos also, however, can turn people off since they’re arguably far removed from any final product a gamer will actually play. Not to mention that many have all the quality of a Syfy channel reject."