I think it is overly optimistic (which based on their incentives should be expected (who wants to know that they will not be a MultiMillionaire?).
Here is their conclusion for me:
***Your Chances of Being a Multimillionaire: 88%***Yeah, right.
It's almost certain you'll be a multimillionaire. Just keep doing what you're doing.
You are good with money, a creative thinker, and an ethical person. You might be the next Donald Trump!"