This attached DAE model has a height of ~324 units as shown by its bounding box.
In a SceneKit, however, if you set the Y-scale to 0.01, the height doesn't become ~3.24. It becomes smaller than 3, which you can prove by fitting it comfortably within a sphere of height 3 (radius of 1.5).
If your asset is too large for a SCNScene, how can you precisely scale its size?