Originally posted by GenomeSoldier
PS2-PS4 games such as this cannot use others save to pop trophies, the encryption isn't supported by save wizard, you can re-sign and use the saves for yourself, but trophies cannot be obtained.
There are plenty of emulated PS2 games on the forums that have been used to pop PS4 trophies, and I have tested some of them myself. If this particular save is not popping trophies it's not because it's a PS2 emulated game, but just because the save was made after the trophies were already popped. That would be an issue with the vast majority of games, not just emulated games.
The fact that Save Wizard does not support any of the PS2 emulated games is only an issue for whether or not those games games can have Quick Codes, and beyond that Advanced Mode and re-regioning. But they can be resigned and hence, if a save is made at the appropriate place for a particular trophy, they can be used to pop trophies.
Also keep in mind that people use saves for purposes other than trophies, such as game progress.