All of them are supposed to be based on the technology that they develop while racing. The reality is that any of the tires are good enough for our skills. No one is going to put a tire through mroe on the street than the MotoGP riders do on the track. I know that I am not a MotoGP rider, are you? :-)

From what I understood from one of the tire vendors, it is just better for highway - but I might be wrong. Maybe someone has a brochure on them?