[boost_]

well CUDA is really for general purpose development on GPUs and to be fair if i recall correctly CUDA appeared before there were standard ways to to GPGPU (like openCL and directcompute).

the idea i got from the video is that mantle is a replacement for opengl and directx for "performance reasons".

i still agree with you though, this is just pure marketing to make people develop/buy AMD GPUs instead of something else.