Story Debate attempts to provide a vehicle for compelling multi-author narratives. The mechanics they utilize flesh out and arbitrate the conflicts that those stories will center upon, they encourage and incentivize their use. The combative focuses of most Story Debates inevitably emphasize warfare above all.
Fate Noosphere is intended to realize social dynamics, both domestic and foreign, that drive body politics. It also intends to make more coherent settings and cooperative worldbuilding from start to finish. Most of the bedrock is derivative of the Fate system created by Evil Hat Games, particularly its most recent iteration Fate Core & Accelerated, with some influence from Microscope.