Power how do we actually define?

Given below are people selected by askmen.com. What about Osama Bin Laden the man who masterminded the Sep 11 Attack? What about similar other terrorist and rulers ruling nations for decades like in African countries. Where do we put them? Time named Man of the century to Einstein for bring huge changes in the field of science specially physics. But, still is he or isn't he the man to invent the atomic bomb too? Why was he named so? Who else could have been?


From money point of view we can put Buffett, Walmart owners and CEO. They employ more than 1.4 million people, a population size of a small country.