True. but still
Originally posted by Gideon
The Return of the Jedi novelization confirms that Palpatine's death wasn't just an issue of morale; his death threw the Force into this state of flux and the dominating mental power he had over the Imperial Fleet and Armies was gone, and that sudden loss caused them to get curbstomped in a fight they, technically, still should have won.Grand Admiral Thrawn confirms it later in Heir to the Empire.
Good point, but Heir to the Empire is EU.