"Link your Nintendo account" option on Black Ops 3 website

[Dr.Vita]

Skullwaker said:

Dr.Vita said:
The Vita Call of Duty sold 1.21M

The 2 Wii U Call of Duty's sold TOGETHER 540k. 
The PS Vita Call of Duty sold twice as much of the both Wii U Call of Duty's together!

Yes, but the Wii U games only had to cover the cost of porting, while Declassified had to cover the entire cost of developing/marketing/etc. since it was an exclusive title. 

It makes more sense to put BLOPS 3 in particular on Wii U, considering it's Treyarch developing the game so it should sell more than the previous Wii U games. For reference, BLOPS 2 sold more than Ghosts despite being a launch title. Because it was actually a quality port. Now that the Wii U has a larger and more active install base, BLOPS 3 should sell more.

So you think Call of Duty Declassified was expensive? No way, the game was shit. Activision haven't invested any money in it. 
Call of Duty Declassified was shit and sold a lot more than 2 big Call of Duty main games on Wii U, which were at least ported good.