Which game will end up being the Wii U' s biggest bomb?

[curl-6]

Dr.Vita said:

curl-6 said:

XCX has sold 810k (not including digital) in 7 months, and will almost certainly cross the million mark when all's said and done. It's no Splatoon, but it's certainly not one of the system's biggest bombs sales wise.

Source?

You're posting on it. ;)

EDIT: 7 months in the West, a few extra in Japan.