This is the story:
Manipulators, or Machiavellians, in the worst way are influencing co-workers for their own benefit and becoming deceptive in getting the needed results. But in the best they can negotiate smoothly, make a good politician or charismatic leader.
Egoists or narcissists love being looked at, and often use sex appeal and charisma to get a better place in the office life. But what’s well in them is their skill to make great first impression and charm clients, managers or HR directors. They are as well enthusiastic and full of ideas, so bosses choose them for their “initiative and management potential”.