No, all Shimano brake pads are not the same. There are several different types of Shimano brake pads, each designed for a specific purpose. For example, there are road bike brake pads and mountain bike brake pads. Road bike brake pads are typically made from a harder compound than mountain bike brake pads, as they need to be able to withstand higher speeds and more frequent braking. Mountain bike brake pads, on the other hand, need to be softer in order to provide better grip on rougher terrain. There are also different types of Shimano disc brakes, which use different kinds of brake pads. Centerlock disc brakes use one type of pad while 6-bolt disc brakes use another.