Kind of. I don't know how clear I can be though, but I'll try.
Basically, the game comes with RTP, so all of the default graphics, charsets, etc are contained within the RTP. When you make a new game, your game can access the RTP without actually having all of the graphics and songs, etc... in their game folder. If you want to make it so somebody without the RTP can play it, you need to give them all the files that are in the RTP that you use in your game, so you need to copy those graphics and put them into your folder as well. Example:
You use the Arshes battler. This graphic is saved in the RTP file, it is not saved in your game folder. But, if you save it into your game folder, then the game will access the graphic from your game folder instead of the RTP. Therefore, sharing your game folder would be enough for someone to play your game, because everything you use is contained within it and they don't need any extraneous resources.