User blog comment:AveryWood/Reasons Why Going With the Empire is Better/@comment-4683558-20120815215801/@comment-5295580-20120817013043

It is not Tullius that is lying to the people it is Ulfric. Like many people his rebellion is fueled more for lust of the throne than Talos and the Nords. Also he is actually a possible thalmor agent. When in the main quest of skyrim there is a dossier that actually states so. ( Or something like that I havent played that mission in awhile.)