Jon Laff, 38 Studios' chief technology officer, was quoted in the press release saying, "Morpheme allows us to create very high-quality character animations quickly, cutting down on a lot of intensive animation design and implementation time." Uh, good! Wouldn't want you to pick middleware that slows you down instead!
So for those who are keeping track: Copernicus now uses BigWorld, Unreal Engine 3, and Morpheme. It's got the trifecta!