Gaming Smash Cross Region

[Kioku]

Okay, I know you can play two 3ds consoles, both different regions, together on Smash. My question is:Can I use a Japanese 3DS and Smash Bros to link up to an American WiiU and Smash?

 

[endoverend]

Nope, Smash Wii U only links to other Wii U games.

 

[Kioku]

Nope, Smash Wii U only links to other Wii U games.

I meant can I use a Japanese version of Smash 3DS to link to an American WiiU to use it as a controller.

 

[Fluto]

Yes, it works.
http://au.ign.com/videos/2014/11/21/how-3ds-connects-with-smash-wii-u