This may sound like a really dumb question, but was it ever explicitly said that the actual winners of the ballot would definitely be chosen? Perhaps Sakurai and his team will simply choose from the higher end results (not necessarily the top ones), and pick the characters who have better potential move sets.
For example, if someone proxy voted freakin' Shrek a couple million times, and a couple other poor smash contenders followed him, isn't it more likely that 5th or 6th place would get the spot?
Perhaps I'm grasping for straws here, haha. I'd really only like characters that will bring an awesome experience to the game, while simultaneously being distinctly Nintendo to make it in. And I trust Sakurai and the team to do just that.