Comskip version

I have the premium MCEbuddy 2.4 Beta 9 and the donator version of Comskip. The FAQ states that a hardware accelerated version is included.
I noticed the comskip.exe supplied with MCEBuddy Premium is much larger than the donator one .
I only use mp4 file format with Intel Ivy QuickSync H.264

Which version of Comskip should I actually be using?

Either one is fine.

The one with MCEBuddy is a custom build so it’s a little larger because it supports a few additional formats.

What formats are in the custom version that are not in the Donator version?