Knowledge of NZ is irrelevant if you don't slow their ball down and none of our back row can do that but as he's left Robshaw at home........
Curry, Wilson and Underhill are very good flankers and can certainly slow them down; Shields' play I don't know so well, but the level of criticism aimed at him suggests many don't feel that he's up to it and his few England outings do date suggests he isn't the best...