..... I don't race so the power difference between the 2010/2011 Mustangs is not an issue for me. If that's your thing, then the 2011 is for you......
Speed or power is not only factor... updated suspension, electronic stability control*, electronic steering, 6 speed transmission, brembo brakes*, etc.
*w/ brembo brake pkg.
Speed is just a small piece of a larger puzzle.