UFC Undisputed 2010 for PSP, "better" save data typically refers to files with 100% completion, unlocked legendary fighters like Shaquille O'Neal
Pre-loaded saves often come with all shop items purchased, including clothing, nicknames, and Topps UFC trading cards. How to "Better" Your Own Save Data
The PSP version includes almost all the "secret" fighters found on PS3 and Xbox 360, accessible via main menu inputs that save to your profile. Unlockable Input Code (Main Menu)
The Create-A-Fighter mode is limited to 8 slots. A better save will have all 8 slots filled with "Monster" builds:
