User Role Editor – what's the difference

http://ww.wp.xz.cn/plugins/user-role-editor/

Your plugin and his look identical, however his is more recently updated. What is the difference???

And I am trying to create a role that cannot see/access the Plugin menu entirely but it does not seem your plugin can do this, am I correct?

http://ww.wp.xz.cn/plugins/nav-menu-roles/