I thought they were the exact same price but kazam is right! My bad. It makes sense though since the Type R has more carbon fiber at the top and according to Beast it makes the area above the tank a little bit higher by about 2 inches. Here is a pic of mine. It pretty much curves forward with the shape of the tank. It is conformed almost exactly to the tank shape. The Type R makes the tank look like it has a whole different shape.
Also, here's the link that shows what materials match up to the different letters like TC.
http://www.a-tech.org/shop/sample.html