I reckon NZ by 6-8.
I know this will come back to bite me in the arse but I'm a GB fan who I'd say is pessimistic but I honestly dont see why so many people have this NZ team so far ahead of GB. Dont get me wrong GB arent amazing but I'd say we're not far off having one of the better teams we've had in a while whilst NZ arent particularly strong in the areas that they would usually dominate, ie speed, offloads and in the backs. I think theyll win due to the ring rustiness of GB and being at home but I hope and think we'll put up a fight.
The week after however I fear is a different proposition.