First WiiU game to reach 5 million in sales?

[zorg1000]

oniyide said:

curl-6 said:
NSMBU cos of it's head start. Kart will get there too, though, and perhaps faster than NSMBU will.

that doesnt even make sense. NSMBU will be bundled for the rest of WIi U's life. MK8 probably wont, no way it will catch up and pass it.

Why are u assuming that NSMBU will be bundled for the rest of its life and Mario Kart wont be heavily bundled at some point?