Well, not sure if you have noticed it, but generally games in trailers and videos sometimes seem to be running a lot smoother.
For instance, look at this Back to Dinosaur Island video:
Or many other examples out there. When the camera moves around or dinos move around, it’s like 2x smoother than when I’m playing something on my own PC or working in game engine. (Even though we don’t have a fps problem).
What do you think?