I really like how this video compares the power and speed of gymnastics to other sports. I think putting gymnastics stats into familiar terms--for instance, showing how her tumbling is high enough to clear a racehorse-- can give non-gymnasts an appreciation of the athleticism necessary for these skills.
Unfortunately there's a flaw in their whole assessment of the tumbling pass. Can you catch it?
Watch more video of 2012 London Olympics on gymnastike.org
That's not a double twist.
I understand it can be hard to count rotations when a gymnast twists so fast, but it should be pretty obvious that when someone takes off facing backward and lands facing forward, you're dealing with halves. It's a 2 1/2 twist. That's 900 degrees.