Image Stabilization (Sony MovieStudio)

I did not know in which category to put this.

I have been working with Sony Movie Studio 13 over the weekend. I discovered there were (at least) two different stabilization tools. One in the GPU accelerated category and the other one is called BCC Optical stabilization.
Does anyone know the difference or do I have to produce shaky video on purpose to then go and pass it through both to compare the results?

Addition: The GPU accelerated one takes some time, the BCC one forever...

The GPU accelerated one:

And the BCC one:

Reserved for test results.