Battle Mode is being designed as a single screen, multiple controller, multiplayer mode and is currently not planned to arrive on handheld versions of the game. (yachtclubgames.com)
The first handheld version of the game in the franchise, Smash Bros. on the 3DS is surprisingly crisp and detailed, running at a clean 60 frames per second. (gamingtrend.com)
Because of one limitation or another, handheld versions of the games available on today's consoles usually are more limited offerings that capture some of the essence of home console version, but don't really offer the experience per se. (playstationlifestyle.net)