It seems Tekken Tag Tournament 2 is looking to be the definitive version with the Wii U Edition. The title will have unique modes and character costumes only available on the Wii U.
Tekken Tag Tournament 2 Wii U Edition will have Mushroom Battle Mode which was recently revealed. Also include are unique costumes for Mario, Luigi, Peach, Bowser & Link to dress up your favorite Tekken character. More modes and character costumes are set to be announced as the launch nears.
Tekken Tag Tournament 2 Wii U Edition is set to release on November 18th