RSA look pretty solid. Against Argentina they weren't amazing. In the Southern Hemisphere based on what I have seen in the last few months, SA is our biggest worry.
Hard to tell with Northern teams as there has been a LOT of movement at the top for them.
Our biggest two opponents for right now are pressure and how we deal with it (including defensive line speed pressure), and referees. We need to find a way to take them out of our games through understanding and complying with their differing views on game management.