Donald Trump may run a real estate empire and be leading in the G.O.P. presidential polls, but he is not a 'superboss' because of his inability to share the spotlight, said Sydney Finkelstein, author of Superbosses. 'One of the things they have is an ability to make room for other people, no matter how big their ego or personality is,' said Finkelstein. 'They need to step to the side when they need to, and it is not clear that is exactly Trump’s method.' Finkelstein, a professor at the Tuck School of Business, said Trump’s rival on the Democratic side Hillary Clinton has more of the traits of a superboss because of her ability to create a network. 'You look at all the people that have worked for Bill and Hillary over the years and they’ve been placed in all kinds of places,' said Finkelstein. 'There is a gigantic network that they can draw on and create some value for them and for each other over time.' Finkelstein said Trump’s success in the business world does not necessarily equate to being super by his definition in the corner office or Oval office. 'What makes you a superboss is not just success, but your ability to have a legacy and continue that on by developing a bunch of other people,' said Finkelstein. 'That’s the part that’s a little unclear for Trump.' A clearer example of a Superboss in Finkelstein’s view is Ralph Lauren (RL), founder of the company that bears his name. And while clothes don’t necessarily make the boss super, Finkelstein said Lauren’s ability to motivate his employees does. 'He had this ability to energize people and people love innovators and he, of course, is a great innovator. '