My company actually uses both.
FreeFlow Core is way to automate processes like preflight, imposition, and distribution to various output devices.
Fuji XMF is a Pre-Media job management system for all of a company's jobs where they will stay until archived or deleted.
You can automate some things with XMF hot folders, but for advanced automation I use FFC.
When it comes to company wide job managemet, color management, lithographic screen technology, etc. I would say XMF is the way to go.
FFC is not meant to be a long term storage and job management system, and if too many jobs are present, FFC performance suffers.
Hope that helps.
