Please forgive my ignorance (seriously), but what sets detailed vector art apart from textured meshes? That image you linked to looks to me like a highly detailed mesh with a very high resolution image applied. Exceedingly well done, with great flair and artistry, but the same in principle as the much lower poly-count meshes and lower resolution textures used in games like Fallout or Oblivion.
I'm afraid that image doesn't make it clear what the difference is.
Without getting into the details, its called http://www.readactor.com/wp-content/uploads/2010/05/Gradient_mesh_katy_perry_by.jpg...and if you can believe this, its a mesh for a 2d item like a texture. That wireframe is actually for the texture!
The image was presented to show the amount of detail capable in Vector art, compared to what most of you are assuming in arcade games. But the difference between a regular mesh (pixels) and vector mesh, is that a vector has unlimited resolution.
Like I said previously, its points on a graph, no matter the increments, these points can be scaled.
Bottom line though, the processing and man power to generate vector textures is a little far out.