How will Black Ops 2 sell on Wii U?

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Wii COD sales: (To date)

COD3: 2.16m

World at War: 1.85m

Modern Warfare: 1.46m

Black Ops: 1.21m

MW3: 0.52m

Black Ops 2 on the Wii U won't suffer from downgraded graphics like the Wii versions did, and has a fair chance of getting feature parity, but it will launch AFTER the PS3/360/PC versions, which will stagger sales somewhat in my estimation.

How do you think BO2 Wii U will perform, and why?