If you look at the picture of Cau Cau in Noddy's match program, you can really see how low he runs compared to Digby, very easy to change direction and harder for him to fall over.
Wow and also going by the match program, Cau Cau has scored 10 tries in 7 tests. Pretty good strike rate but I can't believe he has only played 7 tests, what a crime.