the only real differences are the shape of the levers and the screw is positioned differently so it doesn't come loose, the cylinders are smaller so they are lighter, Full 6061-T6 construction rather then cast aluminium making the brakes stronger, the hose construction is plastic, with a kevlar reinforced centre, making it much tougher than the standard plastic hose and is closer to the bars so you are less likely to hit it, Pin in the brake cylinders are much smaller, making them stronger and stiffer as well as preventing them from scraping against the rim when pads are worn down and can be made wider and shorter to fit the rim and mounts better. other then this the only main difference is the price. and they are more powerful but not by a lot.