From the Boks pov: Marx was very ordinary, and really has been during TRC in general. Does not have the presence about him of past years, when he had the benefit of coming off the bench with the bomb squad.
Lot of mistakes which is usually OK playing clatterball but things out in the open were their undoing IMHO.
Le Roux missing the tackle for the first try was laughable. Almost as laughable as his faux-confused look whenever he does something wrong like give away a penalty.
There is still a lot of talent there, and it would be unwise to write them off, but they're not getting any younger and RWC is over 2 years away.