stock-picking acumen...NOT!

I joined Motley Fool's CAPS a year ago, hoping to prove my stock-picking acumen. Any company you want to express a view on, you just put thumbs up or thumbs down. If a thumbs-up stock beats the market by x%, your score goes up x - and so-on for the other three possibilities. Also they keep track of your pure accuracy of picks (what percent of picks did you get right). After one year, my accuracy is 50% and my score is basically 0. In other words, I am EXACTLY average at stock-picking and possess no special ability whatsoever. I should buy mutual funds.