The equal-odds rule is simply wrong. A few examples: Andrew Wiles, Charles Darwin, John Forbes Nash. These people produced a small amount of work, but they shook the earth. Some people are geniuses, and some are not. It appears rather that some geniuses are prolific while others are not. Examples of some prolific ones: Einstein, Serge Lang.
Edit: A commenter pointed out that Charles Darwin goes in the second list.