Will any future Wii U release ever top Mario Kart 8's opening week in sales?

[forethought14]

Smash Bros. U will have the holiday advantage. Let's not forget that Mario Kart is a bigger series than Smash in modern times, as it appeals to millions more people, so it's possible that it won't outsell its first week. With the holiday launch, Smash has a good chance, but not a guarantee.