The difference is that if it's salted you need to work to get a specific password. Without salting you can test a generated hash (rainbow table) against all 6.9 million hashes at the same time.
Not defending the choice - bcrypt is obviously a much better way to go.
The thing is, though, that it's trivial to slam through that set of salted passwords. It's like unsecured Wi-Fi versus WEP: "door unlocked" versus "'No Trespassing' sign."
Not defending the choice - bcrypt is obviously a much better way to go.