How to mod games on ps3
I don't know how you did not interpret my points, but you alone confirmed most of what I said.
HOW TO MOD GAMES ON PS3 MODS
Even on Skyrim, loading mods will crash your game inside of an hour, assmuing that you went through the headache of dissecting the disc image, replacing and backing up individual files and packages, repacking the image, then loading that back on the console. There are the VERY rare instances where someone made a mod for a game specifically for the PS3, but they often fade into obscurity or are hosted on very shady sites. Creation Engine games use a simple package structure on all systems with mere tuning differences in most cases, hence why Skyrim mods are a thing.
Because of this, you get very little headroom for running extras, it will probably fail due to a lack of compatibility, and you will have to directly modify the game files every single time that you want to change something. The game in question has to have the same or similar system and file structure as its PC counterpart for the sake of compatibility with PC mods, and the hardware itself is a big limiter since it has nowhere near the same amount of power as a PC and uses its own processor that is different from what's in a PC. Modding on a PS3 is virtually impossible for two reasons.