Since its unveiling, the Smash Box–the newest controller unveiled by the Hitbox team for playing Super Smash Bros. competitively–has been embroiled in controversy. Not unlike the Hitbox before it, the Smash Box has faced accusations and concerns of giving its users an unfair advantage when compared to the GameCube controller, which has essentially been the only legal controller for the game since competitive play has taken form.
Daniel Lee from Yahoo! Esports has decided to take on its controversy head-on by playing on it and examining the controller in his latest episode of Melee Science. In this episode, he talks about the trade-offs of execution when compared to GameCube controllers, as well as how the ergonomic layout of the Smash Box prevents some of the strain and injury caused by long-term use of the GameCube controller. Moreover, he discusses how the rules regarding modified controllers need to be updated by the Smash Backroom to clearly define what is legal–and what is not.
Source: Yahoo! Esports