Yea sure I see what you mean. So can you tell me what reputation AMD has for CUDA support on Linux? Or any of the other GPU providers?
They have none because their driver support is nonexistent. That's why everyone under the sun uses Nvidia despite their abysmal software support: it's still better than everyone else.
Cuda is ok, but it's the sheer mass of people targeting the platform that makes it more interesting than eg opencl. It hasn't don't anything clearly better aside from aggressively trying to court developer interest. It will pass and we will have stronger runtimes for it.
What really sets nvidia apart is its ability to market to people. Truly phenomenal performance.