"Arise, arise Riders of Théoden! Fell deeds awake: fire and slaughter! Spear shall be shaken, shield be splintered, a sword-day, a red day, ere the sun rises! Ride now, ride now! Ride for ruin… and the world’s ending!" -Tolkien
It means that, if a random definitively confirmed human is asked to identify whether or not 'subject x' seems human (in a context where either response is reasonable), there is a better than 50% chance that they will respond in the positive.
What got me - in the context of these being AI designed for a first person shooter game as aopponents, was the part about how they could be used in robotics for more pleasant interactions. The drones will shoot more nicely?