Ahh my favorite position. Cowgirl. My whole JAV collection is pretty much based on this.
One thing that I've noticed (and I said this in another post a while ago) when comparing JAV to western porn is that JAV has HEAPS more cowgirl position scenes than Western Porn, and 00% the JAV Actress's know how to move their hips much more than western porn stars.
Most western porn starts just seem to bob up and down on the man, but JAV actresse, they bump and wiggle and grind and move their hips much better. Basically, they know how to cowgirl.. VERY well.
Personally I don't think I'd last 10 seconds under a Jav actress... but I'd be willing to give it a shot