Repost here as I accidentally posted as AC.
One of the main problems with FireWire was that it required expensive cables due to the high quality cables needed to carry the bulk power. With this spec change and the data model for SS USB, have we now got a high tech FireWire-- with all of the disadvantages and none of the advantages (I.e. daisy chaining. Guarantees about latency etc).
He is refering to the USB Mass Storage class, they implement an interface to write sectors using the "SCSI transparent command set" they do not implement any particular filesytem, That said they usually do come pre-formatted for fat 32. but use of fat is up to the user, I use ZFS on mine.