Complex sentence: There are two major advantages, smaller turret size and simpler fitment of an autoloader, although these benefits were outweighed in practice by the disadvantages, which included auto-loaders not living up to their promised performance.
Split into simpler sentences: There are two major advantages, smaller turret size and simpler fitment of an autoloader. These benefits were outweighed in practice by disadvantages such as auto-loaders not living up to their promised performance.