the W coordinate is not used in the m2 uv coordinates. All textures are mapped with a coordinate of 0 for (W), the maps for their faces and others are mapped on the same coordinate, just two seperate texture templates were made. Thats why the head and body are seperate materials. You can apply a map for each material of the m2 figures, you dont need just 2, and they will still all be on the same coordinate, because the material is only looking at the coordinates assigned to it, not what else is on that plane.