Don't be under any illutions-this Brawn GP car is designed by Honda.Brawn neither has the money nor the expertise to incrementally devolop the car as Ferrai McLaren & co. do.So we have seen the best of it here.when the race moves to diufferent circuits like bahrain we will see the difference in performance.
Button is just bluffing like Hamilton(on performance).But i think he cant afford to do that in a team like Brawn GP-Others are redesigning their car completely or at least the rear.So watch out for the bigwigs in china.