The factory hitch can handle a significant load and it looks like it belongs there. During an extraction I would be very concerned about the load capability of some of the aftermarket crap out there.
BenzWorld.org forum is one of the largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the world. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more!