Posted By: 
mcavoyGood point (cycleback).
I don't collect bats, but ...
Mr. Bushing probably has a wealth of knowledge I would highly consider if I collected bats, whether he has a Master's or not.  His knowledge may be questioned by some, but perhaps not by most.  If I did not consider his knowledge to be reliable, I could find alternative sources, or opinions, I imagine.  No mention yet of credibility. 
Now, if I was sued by an authenticator service & auction house's customer, I'd be very interested in the background and credibility of the customer, authenticator service, and the auction house's experts.
I wonder if there is a case of a customer suing someone who is quoted in the newspapers or posts in chatboards about the alleged lack of reliability of a any company's graded card product.  With the stories about the high-grade Wagner, what if a buyer, someday, used a civil case against some of those who posted alleging its condition, and was supported by the grading service (Back on topic - vintage cards, ha!)?