Was this Sony's odd attempt to get Gamescom players to stand the correct distance from the screen (and from each other)? Were there just a couple of round holes in the showfloor that needed to be filled in, and these trampolines just happened to be handy, and one thing led to another...?
No one at the booth seemed to know, but as the player on the left here demonstrates, a little extra height is not unwelcome when pulling off those overhead smashes.

