I think it mostly has to do with styling and looks in general. The GSXRs are just not good looking bikes. Ugly graphics and paint schemes. I happen to really like the GSXR 750, but it's ugly. Suzuki makes weird decisions on their bikes when it comes to appearance.
Besides the MV Agusta F4, the 04 R1 is the hottest looking bike.
Besides the MV Agusta F4, the 04 R1 is the hottest looking bike.
