Smash Bros. Wii U sells over 490,000 units in the U.S., fastest-selling Wii U game ever

[iTechHeads]

Soundwave said:

iTechHeads said:
Mario Kart 8 gave the U a 300% sales boost. If the same boost applies to Smash then the U could sell 100k+ on Smash Week.

I'm guessing it didn't since Nintendo probably would've mentioned that. They did when Mario Kart 8 came out. 

They're probably saving that announcement for November NPD.