Not vacuuming results in times all the way up to 121 minutes. For a direct comparison with Access, the vacuuming time with Postgres should really be included as this is not required with Access.
Hmm but then you would have to include Access Vacuum too I'll think you will find "Tools -> Database Utils -> Compact Database" preforms a simular purpose and is just as important as I've seen many Access Databases bloat in my time.