I asked almost this very same question in this thread.
Two new Dog Brothers clips
It was Crafty Dog of the Dog Brothers promoting their new clips on their websites, I watched them, found it very interesting and posed almost the same questions you did.
I recieved a few answers from forum members, and then Guro Craft answered my question about the particular piece, and skill levels.
I think that should answer your question, now I do see certain techniques and skills being applied as I've done more research into the FMA, particularly stickfighting.
I recently took up this art and love it, I see the techniques going on in the stickfights as I would see the techniques being executed in a BJJ match, or a mma fight.
At that time I was a FMA noob (still am), who was watching stickfights, like the MMA noob watches a UFC fight...
"Their just laying on top of each other" is what they see, but while watching the grappling take place I notice the subtle movements of hips setting up a submission attempt, the postures and controls they are using, when they move from gaurd to half gaurd I notice that and notice the techniques used...
While others see them just laying on top of each other.
Hope that helps.