According to this article from the India Times, there is a direct correlation between the kinds of skill needed for leaders to excel in an MMO, and the skills required for success in the real world. Namely, these skills break down to "Collaboration is key", "Vision is important", and "Information gathering and synthesis generate results".
However, while it all sounds great on paper, there is a literal world's difference between decisions that affect the outcome of a game, and choices that determine the fate of a business. This is not to say that games can't be a testbed for quality decision-making behavior, but it takes real ingenuity to directly apply game experience to the real world and have corresponding value. What do you think? Do gamers make better leaders?