According to Android documentation:
Android (4.4 and above) supports emulating cards that are based on the NFC-Forum ISO-DEP specification (based on ISO/IEC 14443-4) and process Application Protocol Data Units (APDUs) as defined in the ISO/IEC 7816-4 specification
On the other hand, Falica cards are compliant with JIS: X6319-4 as per Felica's wiki entry.
So, presumably it is not possible to use an Android device for emulation of Felica cards. Is that accurate?
That is correct. But, there are currently patches from Sony on AOSP under review that would allow card emulation of Felica cards. See for example https://android-review.googlesource.com/#/c/128491/