If you're looking for more information on WWE SmackDown vs Raw 2013 or PSP games in general, here are some additional resources:
Here is the breakdown of what is available and what you might be finding online: Official PSP WWE Games If you're looking for more information on WWE
Updated Roster: You will often find superstars like CM Punk in his "Best in the World" prime, Ryback, and Shield-era Roman Reigns, Seth Rollins, and Dean Ambrose.New Arenas: Mods usually include the 2013-style stages for Raw, SmackDown, and major Pay-Per-Views like WrestleMania 29.Thematic UI: The menus are often redesigned with the "WWE '13" aesthetic, featuring the iconic "Revolution" branding. How to Play on Modern Devices and Shield-era Roman Reigns
Off (or set to 1 if your device is low-end). If you're looking for more information on WWE