Movies and game images are very different, in a movie if you see frames 1 and 3 you can guess what frame 2 would look like based off the motion blur, since computers do not track what it used to look like and cant know what it will look like each frame is crisp and does not aid in the smearing and motion blur your eyes expect to see so you cannot compare frame rates in prerendered media to frame rates in games which are rendered as you go, they will look very different.
I personally would much rather have 60FPS than 30FPS and 3D, if 3D isnt spectacular it would likely just be a disappointment.