Just a quick summary for anyone not wanting to watch all 11 minutes (though I'd highly recommend, great video!), the battle black is DLC coated on plain titanium (giving a pretty uniform black coating) THEN tumbled. The stonewashed DLC is stonewashed prior to the DLC coat, so you get a nice shiny DLC that still has that stonewash character, compared with the battle black DLC being more matte.Rick’s got, or had, 2 black finishes.
Watch this:
There's also the anthracite finish just to complicate things even more
