That would be true if all five cylinders are all the same size, but that hasn't been disclosed yet. The way I have been hearing it, it makes power like a twin (front three firing at once, rear two at another interval), but with the amount of cylinders on the front, the engine would be out of balance so either there is a balancer for this or the two rear cylinders are larger each than the front three, hence the size may be 825 but I ain't no engine engineer. The reason they say it makes power like a twin is because it sounds like one, so the power pulses are spread further out than yamaha's screaming engine I heard in the video.