Sorry, a bit of a language barrier here. I don't know if having the gamesave written to the SRAM would be enough or if the NOR could fool it. My guess is Metroid Fusion and a few others only work for GameCube linking because those games normally used battery saves anyway. I'm sure it depends also on the game trying to read from the GBA cart, what kinds of checks it does. I'd say just give it a try, worst case scenario is it just doesn't work.