FSBased backup supports Full and incremental log backups.
But you cannot restore indivisual databases or tables(unless you are using block level backups).
DumpBased backup provides table and database level restore support.
But you can only perform FULL backups under this.
Here we use pg_dump/pg_restore utility provided by postgres to backup and restore databases.
I suggest you to use FsBased backup as you want to backup archive logs along with databases.