On Marcus' show last night, Skip Talbot did a great job dissecting the AccuWeather release point-by-point. The short version is, if AccuWeather tornado-warned the OKC/Moore area for the specific reasons they allude to in the PDF, then it's purely coincidence that the 3/25/15 tornado happened to touch down in their warned area; because the images used in the release show that their "superior forecasting model" allegedly predicted a mesocyclonic supercell tornado, which the Moore tornado was decidedly not. The PDF is written with the expectation that the person reading it will be unaware of the difference.