I don't think that you can use that Bok game to prove anything other than Dagg is superior to Mills.
I think anyone who comes to that conclusion isn't looking at the big picture. I am very impressed by Dagg and no doubt he is a better runner than Mills but that's not the only thing to consider. I know I keep pointing it out but as good as Daggs running game was nothing came from his breaks because he turned the ball over when the defense caught up with him most of the time. Even if he had put a kick in at the end of some of those breaks to gain territory the All Blacks would have profited a lot more. He conceded maybe as many as 6 turnovers in that game. All those running meters are great but if you give the ball away at the end of it then it's almost for nothing. Kinda the complete opposite of what Mills would do. No Mills wouldn't break the line as much but he still has the ability and speed to do it but when Mills has the ball he is always looking to setup his wingers and if he goes to contact he always makes sure his team stays in possession.
To me Dagg looks like THE MAN for the 22 jersey this world cup and to take over from Mills next season. But the safety, experience and ability to link with others that Mills offers is critical right now.
As far as the wingers go the only thing that's for sure is that neither 11 or 14 have been claimed. kahui and Toeava get their chance now and Zac & Jane will get their chance next game then I think the better of those guys will get the nod for the run to the finals. Personally I'd like to see Kahui in 11 and jane in 14. Going to be hard to trust Zac at 11 after he made some mistakes against Aussie.