the FX could definitely do better than that.  i mean even the Jaguagr's Fight For Life looked way better than that.  i think this is just meant to show what the average game with programming aspirations could do.  the FXGA comes with information on where to find work as a programmer and the item itself was really meant to bring fans into the game design process.  i have the first Develo discs which, in addition to PC Engine demos, featured some homebrew stuff.  i gather something similar was going to be done with the FX.