Every single PS3 gamesave has the same folder structure: ICON0.PNG, PARAM.PFD, PARAM.SFO and finally the savedata file (ie. Replay.Dat for this game) This last one could have different filenames, depending on the game. SOCOM Confrontation has SOCOMCNF.DAT, Burnout Paradise, Lumines Supernova and PAIN use SYS-DATA without extension, Siren uses SIREN.DAT, etc.
Given my previous statement, I found something unusual. Blast Factor uses 4 XML files for data saving: FP.XML (1.8kb) , FP_AR.XML (16 bytes), FP_HY.XML (16 bytes) and GP.XML (112 bytes).
Dunno what could be done to the respect. Cheers