I'm not worried at all. Other action games sell "badly" on Wii U because they arent exclusive. People would buy the game, but decide to get it on another console because they know the Wii U version will be gimped. This ends up lowering the multiplayer potential.
This game is exclusive. ZombiU sold 700K+ and is a launch game. This game is releasing after the Wii U's perception is getting better, and grows it's install base even more, and as an exclusive, and after the Wii U's online multiplayer base grows because of MK8, Smash Bros, and Splatoon.
I REALLY dont see a reason to be worried.








