When healthy, Wolfman is the most explosive player in the back line.
Every time he hits up the ball he carries several defenders a few meters before he's tackled. Robertson on the other hand falls in a heap every time he hits the line...
Robbo is a good finisher but he doesn't really...
I think Wolfman and Hoppa are both more talented than Robbo, you never see Robertson break tackles and create opportunities. 99% of his tries are just generic winger tries after being put into space or an overlap.
That said he's been very consistent and I doubt Des would drop him from the side...