yes, the Pro is clearly targeted by Apple to pro apps, like FCP, that are optimized to use its full capabilities. so far, no third party apps, like Premier, are. nor the 3D apps either, as you describe.
the test will be when and if major software companies do this. Adobe probably will sometime in the next year. maybe some
CAD companies too. otherwise ...?
if a critical mass of third party software is updated for the Mac Pro, then it could really take off. if not,...