What can I say. Mess with the best, die like the rest.
I only watched the last set of the match, but it was very similar to JJ's matches against Ana. JJ simply doesn't have the weapons to beat big hitting players who have good mobility. She can beat you with placement, but that's only if you play passively. But if you attack the ball, much like Dinara and Ana can do, JJ can't do much and she is at the mercy of her opponent. If you can keep your nerve with her and your patience, she's pretty beatable, especially when her movement is (allegedly) compromised.