Dave,
I won't argue with you since I know little about the Nvidia one. I am sure you are correct about a single driver for all products (I know ATI/AMD works that way), however I suspect that the driver configures itself based on the card that is present. I has too because of the type of memory, PCIE interface, RAMDAC settings and a bunch of other functions.
I guess in the end it does not matter if we can get Mike going again