although i can't speak for rockauto's part accuracy with a new car (sometimes it takes time to get the parts list right) i think you need to look again and the first one. i just looked at the 2013 and 2012 models on that site and there is nothing wrong with the drawings. it's more info than you'd get out of the service manual.The first has pretty bad part diagrams
I guess I'm just spoiled by what was available for parts diagrams when I had my BMW (I miss you www.realoem.com). The crude line drawings from the first site for the rear license plate light assembly were a bit of a letdownif you think those are bad, you're going to be waiting a long time for something good.