Mack

In the SAO-RPG world, there really doesn't seem to be any real difference in terms of mechanics, although you could certainly RP that item as being of noticeably inferior quality.

Cause the bad quality weapon isn't supposed to exist.  It should be destroyed on creation.  If you look at the loot guide, you'll see that any kind of drop will give you a Good item and above.  Makes a little more sense now, ay?

That makes sense, Hirru.