I Know a way that i can burn games without burning the iso using nero and get a perfect backup everytime...
No. The reason why you need to put it in ISO format (XBOX ISO FORMAT!) is because XBOX game discs, like all discs, have a image format. ISOs are the images of game discs, audio discs, etc. You can't just burn the files and folders to a disc and expect it to play in the xbox. You CAN burn a xbox game in UDF format, but chances are that the game will be slower and black out screens will occur.