By Matt Hardy As the Rugby Championship reaches its climax, can Argentina upset the apple cart and topple the Springboks? What constitutes a world class rugby team? Is it World Cup wins alone or is in an era of dominance year in, year out? How about a team with fewer resources than the others going into the final weekend of the Rugby Championship with a first ever title still a possibility? Because that’s exactly the scenario Argentina have manufactured for themselves. They’ve already condemned Australia to the wooden spoon for the tournament contested between the two teams, plus New Zealand a…