Presidents, in Contrast to Leaders in Parliamentary Systems, May Be

Presidents, in contrast to leaders in parliamentary systems, may be more likely to be seen as leaders for all the people of their nation, not just some of them, because

A) they are required to share office with a vice-president who is demographically different than them in a significant way (such as gender, race, regionality, religion, etc.) in order to provide more voters with a leaders likely to share some of their demographic characteristics
B) they do not run with the support of a particular political party
C) they adopt a tone of humility and inclusiveness in their public speeches
D) they are elected by the people, even if indirectly, not by a political party