One many is fishing by a river with some buildings in the background while another man next to him is about to get a drink from the bottle next to him.
A man is in the desert
One cannot be fishing and in a desert at the same time.
A MAN CANNOT BE COMPARED WITH MANY AND FISHING CANNOT BE DONE IN A DESERT
One man fishing and another about to drink is two men and is more than one man in the desert.