Green Screen Comparison

In this video I am dancing with my friend Corey's hat once really in front of the door and the other time in front of a green screen. Can you tell which is which?

Difficulties: I tried a totally different video which took me an hour or so where Corey and I kick a chair behind us. The chairs were going to move in the green screen after we shot video of us pulling the chairs and I reversed the footage, but they would not pull straight. On the After Effects side of things, getting the green screen footage to line up exactly with the color of the actual footage was difficult, but in the end it might have helped confuse viewers with the illusion.