Where did I say that? I stated my familiarity with the substance, and yes, I have shot it. While we're at it, I've shot wood, metal, and even plastic, too!
Then why do you think you're an authority on them or that you can make a judgement about how or what they should look and operate like? That's just completely nonsensical.
That's how I see it. Furthermore, why didn't they use the PhysX to do something cool like fire. How come the car explosions look the same? All I see in that video, and as others haven commented, are gaudy chunk and debris effects that detract from the game, and give a tremendous performance hit while doing it. And people wonder why no one is lining up to try out PhysX .