Hey, here's a video I think you might all like:
http://youtube.com/watch?v=Ml_n5gJgQ_U
This has a scientific breakdown of the WTC 7 free fall speeds.
No. It has a breakdown presented by someone with a deep voice; that might look and sound like science to you, but it ain't.
Looking at your video, did you notice that their clock started well after the building began to fall? Even when they did their stop-analysis, and say "the ball has just been released, but WT7 is still at the starting line", it is clear that the left side of the building has already begun collapsing. The inertia from the left side gives a jump start to the measured (right) side; of course the time they get is faster than would be expected if the right side were falling independently of the left.
Did you even look at the video?