With respect to the skill displayed in that video, it's different from this research. The video you linked doesn't have the same precision displayed in the research; I don't think they'd be able to go from hovering, through a window, back to hovering as precisely as was shown in with the single copter craft.

The single copter craft does turns, flips and dances all around, but it's over a much larger area and nor is the human pilot trying to accomplish a particular task. I think he's just having fun, free-form style. The key difference, I think, is that a single copter craft can't change direction as quickly as the quad copter craft.