I expect that their judges' determinations are about story, first and foremost, whatever that story is. It is presumed and expected that any submission is reasonably close to the industry standard formatting. (They have their own famous little sample formatting script that can be followed: http://www.oscars.org/awards/nicholl/scriptsample.pdf
I know that they're not interested in Marvel/DC adaptations, or novel adaptations (unless it's your own I.P.). But anything else, if it adheres to formatting standards and is in English and is less than 140 pages, ought to be in contention.
But, they are tough
. You won't get a simple Die Hard clone past 'em.