Not really on the compute side yet. This is their 2nd attempt at supporting Blender as the first (an OpenCL renderer for Blender) was deemed unmaintainable and deprecated shortly after it was released. All indications are AMD is doing much better on the video driver side (which is where the good news is), but on the compute side they appear to have a long way to go still.
They likely mean the GUI settings interface that competes with the GeForce Control Panel, not the driver itself.
I sometimes pass a W3100 through to a Windows VM so I only know the Radeon Pro interface, but I do feel like its designer's last project may have been building an AOL prog in Flash.