Please refer to the latest Release Notes for the most up to date System Requirements. The Release Notes are updated with every (patch, Service Pack) release, and reflect the most current product specifications – whereas the Customer Expectation Document is current as the latest major version release.
As it relates to your question, the 'System Requirements" in the latest Release Notes specific the following:
"NOTE: Foundation, Core and Home editions of ALL Microsoft Operating Systems are NOT supported."
Why doesn't the FFCore CED state that Windows 7 64bit PRO is required for installing FFCore and not some simpler version of Windows 7? Or, have I missed something?