It highlights the fact that against other add-ons, like Command & Conquer: Tiberian Sun - Firestorm for Command And Conquer: Tiberian Sun and Age of Empires II Expansion: The Conquerors for Age of Empires II, SS Forever (a rather unfortunate contraction) offers an unprecedented number of new units, maps and terrain types over which to fight yet more battles set during World War II.
As far as expansion packs go, CDV is rather proud of Sudden Strike Forever.
