On that whole smash canon thing.
It's quite plausible Smash has it's own canon, but not in the way people were thinking. Thing is Smash canon is related only to Smash and no other universes or the universes' characters. This is because the fighters in Smash aren't the actual characters from the game. They are trophy versions of them, dolls in 64, "brought to life" by Master Hand.
My theory on Smash canon is that it is all just a kids imagination, playing in a play box with his toys, and that this kid's hand is the Master Hand, and every once in a while his koo koo friend will join along and be Crazy Hand.