For those who are wondering, no this isn't a comprehensive list of the characters in the game and they confirmed the leak from a while back. (blog.us.playstation.com)
Well, it's hard enough making a top list of characters for this game, so I wouldn't hold it against him. (n4g.com)
With that being said, it still plays really well and with the entire long list of characters it holds up pretty well to all of the different styles. (darkstation.com)