a nurbs representation of an equivelant polygonal high-detail object would be much slower, thus eliminating the advantage of using it.
I'm not disagreeing with the speed issue. But saying it eliminates the advantage is like saying only use 500 poly models because 5000 poly models are slower. You could say using nurbs for your mesh is like applying a smooth filter to a 2D image
No I'm saying it's the difference between a true type font and a bitmap font. Still has sharp accurate edges regardless of the size rather than turning into a blocky or blurred representation.