Brake Dust may have contributed to the difference in wear. AR has had complaints as being low quality; but then again, everybody has had that complaint from somebody.
Chrome flakes, aluminum "bubbles" and goes to powder, just like it looks in the facebook pic the OP posted.They do, huh? But I think it's tarnished steel. If that was billet aluminum I think he'd be complaining about "expensive wheels" being messed up. :dunno: