The easy answer:
POWERCORE is not an accelerator card for existing native plug-ins. POWERCORE offers a new format that fully integrates with your existing VST and MAS environment.
The complicated answer:
Native Plug-ins use a Floating Point Algorithm in order to run on the CPU of the computer. POWERCORE, like ProTools, employs fixed point algorithms. As these are very different technical solutions for processing, one cannot simply accelerate existing native plug-ins with