Does the fbx importer work correctly?

Hello I was trying to make a 3d object in blender, and then I tried to export it from blender, and change it to c3b. The object came out quite distorted. I searched a bit aroud in the internet and it looks like the problem is something to do with the 7.4 version of fbx. When I tried using ascii 6.1 exporter with the blender, the model seems to work fine.
I am just wondering if the problem is with fbx-exporter from blender, or the fbx -> c3b transformer.