I am not sure why they call it narrative? It sounds more like simulationist. But maybe they're not using Forgisms, I don't know.
Ultimately, it doesn't matter what they call it, it's not what I want for a rules module. I want something like Book of Nine Swords or D&D encounter (and maybe even daily) powers. I like the resource management aspect they add to the game, and I dislike "spamming" maneuvers over and over again, which a simple system like this encourages. (if it doesn't entirely discourage maneuvers because the penalties are too harsh.)