Huh. This seems really, really interesting. I love how it can be ported over into other systems, and I think it's a great system for resolving Big Things like wars in games such as D&D.

However, there could also be something called a "compromise"...I stole this from Mouse Guard. The idea, essentially, that there can be a bad or unexpected twist of fate, even in the midst of success, or that there can be a stroke of luck, even in failure. That would give some flavor to the game.