IMHO, KN is niether a huge CU play nor a huge AU play and too suggest it is either is not entirely true.
The fact is that it is both a CU and an AU play and the economics of the two metals together make it quite profitable.
Think of this - if AU dropped and held around 500 and CU dropped and held at 2.00, would KN be profitable? Would you make a decision to move to production at thos prices. You're damn right you would.
Now, do you really think we will be seeing those prices anytime soon?