I don't quite understand. If a video is playing at 41fps, then your eye can sample each frame twice, with a difference of one microtremor to increase resolution

I don't quite understand. If a video is playing at 41fps, then your eye can sample each frame twice, with a difference of one microtremor to increase resolution. But if a video is playing at 83fps, you only get one sample per frame with no added benefit from the microtremor. The article states the opposite: that the latter framerate allows for a higher perceived resolution. Can anyone explain?