As I've said before, I think Dufty has potential but he has a number of things he needs to improve before he is a genuine fullback capable of playing in a top team.
His defence is poor, for example, there was one try yesterday where he was close but stood and watched.
I pointed out in his first game that one of his try assists was actually not a good thing as he had the line open and passed instead of going himself. He did the same thing yesterday, he seems to be scared that if a defender gets their hands on him he wont be able to pull through the tackle.
A fullback cannot just offload the ball to his wingers from a kick, he has to be able to do the hard yards himself and make some ground. Whether he was instructed to pass is not the main problem. The issue is I don't think he can do the hard work and make ground.