i ordered it and was sorely disappointed, though I shouldn't have been surprised. The music is godawful, the AI is super janky, the controls are mushy, and for 2 player action, both people need the cart, which is hard when the game in question must be imported.
I will say this though, despite the flawed excecution, it DOES work, in an odd way, which will hopefully lead to more (and better) 3D handheld fighters on the DS