Summary:
The Project Leader option seen in the profile of a user in Web Resource is not associated with the Permissions of the user in Web Resource. Instead, it is an option that can be enabled in Web Resource to make a user act as a Project leader of any Project.

More Information:
A user may have Project leader permission in Web TimeSheet and also be a Project leader for one or more projects, but, if the user, when transferred to Web Resource has to be set as a Project leader of those transferred projects, then the Project Leader option has to be enabled in the user profile of Web Resource.