It's deceptive because the title is being used in a way that you would not guess without reading the article and suggests highly that it is referring to somethi

It's deceptive because the title is being used in a way that you would not guess without reading the article and suggests highly that it is referring to something completely different. "Mediocre success" is not a synonym for "ambiguous result" and in context most would assume it is referring to financial success. The updated title is much better.