Actually, I'm not sure which one is better. The Cien can achieve a maximum power of (at least on my Cien) 1000+ HP, and the Saleen "only" ~850HP. Plus, that Cien can have a spoiler, while the Saleen can't, so it slides all the time. However, the Cien will be defeated when it comes to the racing itself - it is heavier, plus, prototypes aren't allowed for some races - the S7 can win you the Stars & Stripes, and the Supercar Festival, as well as (I think) Premium Sports Lounge.