[jaeming]

As someone who worked for over a decade in post-production, I can tell you this was most likely edited on FCP 7 because it was considered the better tool and not because of cost considerations (FCP 7 was actually much more expensive than the newer version). When Apple released Final Cut Pro X, they re-worked the whole app (I think it was a complete re-write) and based it more on the iMovie interface, which a lot of editors considered less that professional. All the shortcuts and controls were completely changed as well, which made it hard for editors to transition over. A lot of people migrated to Avid or Adobe Premiere. Some just kept using FCP 7 because they considered a superior tool.

In any case it was most likely the offline edit that happened on FCP 7, which could have been done on any working editing station from the last 30 years or more as it just exports the metadata when it gets onlined and mastered.