Smash Bros on 3DS and Wii U was a terrible idea

[Soundwave]

I think in this case the Wii U version will come out first.

Smash Bros. U - April/May 2014

Smash Bros. 3DS - November/December 2014

If that's the case then it's no problem, the Wii U will get most of the benefit.

I think the 3DS version may be more of an enhanced port of the GCN/Wii games anyway.