I decided to probe a little deeper and go to the school's website: The Dallas Academy and read their overview. Apparently their students struggle with dyslexia, dysgraphia, and "other learning differences." It's probably safe to say ADD/ADHD, or mild autism such as Asperger's Syndrome (which my brother has) would fall into miscellaneous issues. I'm more familiar with some of these diagnoses than others, but according to web definitions many of these disabilities are experienced in tandem. What I found most relevant was that dysgraphia, Asperger's Syndrome, and various other impairments are defined as having deficient motor skills, poor dexterity, poor hand-eye coordination, poor balance, tandem gait, or apraxia.
I don't know that's why these kids lost. But that they were students of a school that specializes in education for children that have these impairments seems very pertinent. I would have a number of opinions to share about how the game played out, but it's difficult to justify any personal position about the "game" if the players weren't appropriately matched to begin with. In truth, I just don't know, but I hope the schools at least take another look at the student players' match-ups and determine the level of skill/challenge appropriateness.