What matters is the gameplay. And on a system that has only a few joystick options and a stock controller that is as different from a fighting stick as it possibly could be, that could be a problem. The game has Capcom vs. SNK 2 EO-style shortcuts for special moves, even though the Classic Controller is a bit better suited for fighting games than the GameCube controller.
Assuming any of us will even get to play it, will it be worth doing on the Wii? Will there be enough Hori joysticks on the market to cover the demand created by an original Capcom fighter? Or is the Classic Controller adequate as the liaison between your hands and the game?