Hey have you downloaded this game yet? It's out in Europe.
(a) Button= Standard attack (B) Button= Special. +C-Stick used for jump. X / Y also work for jump.
Controls are similar to Melee and Brawl, however, you cannot ''air dodge'' or dodge with ''Shield + Down'' and ''Smash attacks'' with button (a) cannot be charged, as these are not present. It is better than the N64 controller in fact, because the control stick is obviously not loose; it really feels like you are playing the Gamecube. Some special moves are not there.. for example, PK Flash- Ness, Rollout- Jigglypuff, Mario's Cape, arrows- Link etc, as a result, Link will hurl the boomerang with neutral (B), Jigglypuff pounds with neutral (B), Ness throws PK fire (B) etc.
It's a minor change you will feel.. It's very much like Melee and Brawl.