Full answer (his superhuman role)
The question is whether a single individual, howsoever great he may be, can accomplish such a great task when it is known that a great man is only he whom the circumstances bring forward to be in the forefront of the events. It is based on a particular viewpoint about history which explains historical developments on the basis that man is only a secondary factor, whereas the main factor consists of the forces which work around him. Man at the most can be described as an intelligent interpreter of the inter-play of these forces.
It is evident that history has two poles, one of them being man and the other the material forces around him. Just as the material forces influence man like the conditions of production similarly man also influences the material forces around him. There is no justification for supposing that action always begins with matter and ends with man. The opposite can also be as true. In history, man and matter have always been interacting. If the interacting force of man is celestial then his role in life will also assume the celestial hue. Then it is the Divine force that directs the course of history.
This is a fact which is abundantly proved by the history of the mission of the Prophets and especially by the life history of the last Divine Messenger, for Muhammad (P) assumed control of the course of history and created a culture that could not be created by the external circumstances around him.
Hence, what was possible to be accomplished by the greatest of the Prophets can also be accomplished at the hands of the Awaited Saviour of his Family - The Leader whose appearance has been predicted by the holy Prophet and about whose great role he has already informed mankind.