Have the statistics changed since 2010?

Oh yes: http://www.houstonchronicle.com/business/article/Patent-case...

Even then the differences in statistics on rulings I believe can be explained by the relative sophistication of the plaintiffs who file there -- mostly patent trolls

Absolutely trolls love it there. No clue what that has to do with your original point, though: the venue is absolutely advantageous to the plaintiffs and the rocket docket is a thing of the past.