Are chief executive officers worth their pay? Apple CEO Tim Cook's $10 million in compensation isn't chump change, but it's a bargain when you compare that to the company's massive average economic profit over the last three years. Other companies pay their CEOs much more, but seem to get a lot less for it. Bloomberg looked at the pay-for-performance ratio of 100 CEOs at some of the largest companies around the world to see which companies are getting the best value from their CEO.