With the possible exception of the last man, Dombrandt, the tackles were all missed because of van der Merwe's line and pace - you could argue that the line should be straighter on a kick-chase, but if it had been a good defensive line he wouldn't have attacked like that.
Having said that, I though that Keenan's try against France in the Six Nations would have been a more worthy winner, a much more rounded try showcasing a range of skills and talents. Habosi's score vs Georgia was also nominated, for Botia's outrageously deft off-load, which was equally as sublime a piece of individual skill as van der Merwe's.
O.