Since this is a learning thread, here are some points.

The detail to the creation is "KEY". If you examine the curves of the model that didnt work you'll notice these sharp "CORNERS" that dont exist on the REAL object surface. It may appear to be a sharp spine in a picture, but if you put your hand on the surface of the F9F, you'll not feel this sharp edge.









The precise nature of NURBS calls for extremly accurately placed points and curves. If this is not done accuratly, then the results will be according.

Kinked curves produce kinked surfaces! this model has designed kinks all over it.

If we look at the software capabilities for Complete accurate depiction, yet Rhino falls short then what are we doing?

It seems there is an opposite conundrum here in that, NURBS would do the REAL object and Poly can easily replicate it to look somewhat real. Not the other way around.