Danganronpa V3: Killing Harmony PC .spc files

[SHSLYakuza]

I've unpacked the cpk files from the PC version of the game to see if there is any difference between the Vita file versions.
The filesizes are almost double so I assume they are a higher resolution, however, it seems like the header for the PC version is different than the Vita version. This includes a lot of the sprite files, which are stored inside the .spc files. Anyone able to shed some light into this? Any help would be greatly appreciated.
Below are the files in question if anyone wants to have a go.