CUDA being feature complete and having libraries & frameworks optimized and immediately deploy-able for it is all the difference. I don't like much of their bus

CUDA being feature complete and having libraries & frameworks optimized and immediately deploy-able for it is all the difference. I don't like much of their business/marketing practices for their gaming GPU division, but their engineering and HPC teams are world class and have been awesome to work with / use as an someone who writes scientific computing code on the GPU.