Get this: It was a fashion show for tablets. I'm sure you're used to seeing new gadgets laid out under spotlights, or displayed in a row. Trust me, that's not nearly as eye-catching as having models carry the tablets down a runway.
Whoever came up with this idea is a genius.
Just in case it's not clear, my comments above were not intended to be taken seriously.
From the way Charbax writes, it sounds like this isn't the first time that the Shenzhen Electronics Fair has had the tablet catwalk. That may be true, but this is the first I've ever heard of it. Kidding aside, the catwalk might be a useful way to get some quality photos but it's not the best way to get a good look at the devices. I'm not sure it's worth the effort it took to set up.