Maybe you missed THIS photo
AFP: Nine hurt as Cathay aborts takeoff in Shanghai showing a man sliding down with at least TWO items of hand-carry baggage while the other passengers wait at the top of the slide, clearly accompanied by their carry-on items!
What happened to, "Jump and slide, two at a time?"
Just a thought regarding the above comment. It's a Shanghai flight, there are bound to be a number of chinese pax who can't understand english. I'm assuming the evac command would be in english and not chinese.