Your save file (data.bin or similar naming depending on your region) holds much more than just your progress. Specifically, it tracks:
Important note: Unlike later Strikers titles, 2012 Xtreme does not save interchangeable custom movesets the same way 2013 does. Moves are character-locked. Inazuma Eleven Strikers 2012 Xtreme Save Data
Yes, if:
No, if:
The save file for Strikers 2012 Xtreme is relatively small in file size but carries a massive amount of progress. A "100% Completed" save file typically includes the following: Your save file ( data