I disagree with your characterization of Bruya's article as containing "manufactured data from nowhere." Leiter and his allies are attempting to nitpick to death Brian Bruya's very compelling argument that the PGR's extreme sampling bias means its program rankings are unreliable.
Here is Brian Bruya's response to Leiter's criticism of his article: http://dailynous.com/2015/12/15/appearance-and-reality-take-2/
For those of you who want to reach your own conclusions, here's the link Bruya's original article, published in the journal Metaphilosophy: http://onlinelibrary.wiley.com/doi/10.1111/meta.12161/abstract