Final fight is not using at all any compression inside the code. I got access to the tiledata of sprites and background without doing any decompression operation on the arcade program code.
And while the CPS1 is a powerful hardware, NONE of the games running on it use compression. It's too tight already in RAM for that. In some games, the fun thing when you look at the game code, is that you can almost see some sprite patterns in tiledata words XD !
It's a shame however that you have nothing left out (nor amiga nor your programs