When playing on a phone with limited internal storage (e.g., 64GB iPhones or budget Androids), a 600 MB CSO file for SvR 2013 leaves room for other games (like GTA: Vice City Stories or God of War: Chains of Olympus).
The ability to play a full-fledged WWE game with Hell in a Cell matches, Royal Rumbles, and Championship Scramble matches on a bus or during a lunch break is the primary reason veteran fans still seek out this ISO. WWE SmackDown vs
Communities dedicated to PSP preservation often discuss these compressed releases. You might find threads mentioning: Common Hubs and Forums Communities dedicated to PSP