Something to keep in mind for the EB-1A judging criterion based on a recent EB-1A AAO decision? (from March of this year, link in the comments)

You need to show proof that the judging you did was of the work of others in the same or an allied field (perhaps through contextual evidence that explains the judging that you did and how someone who has never worked in your field would be able to draw the conclusion that the opportunity was in your field or an allied field).