Cinderella frauds occasionally make the Finals. They don't win. Cinderella teams also occasionally take a 3-1 lead on the eventual Stanley Cup champs only to be exposed in games 5, 6, and 7.
Don't be fooled by Cinderella. She's really a homely girl with a mop and bucket.
While all this may be true, I'd still rather be Cinderella than an ugly stepsister.