Just read this about Brave on Wikipedia.
Pre-release tracking suggested the film would open around $55 to $65 million, which is slightly below average for a Pixar film. These predictions were attributed to the film not appealing to males and to the good but not great reviews for the film. On the other hand, its female protagonist, which would draw many females of all ages, and 3D were expected to boost earnings.
In North America, it opened on June 22, 2012 with an estimated $24.5 million. It finished its opening weekend with $66.7 million. Furthermore, concerns that young male viewers would not come to see an animated film with a female lead proved largely groundless with the estimated attending audience being 43% male. The film received a positive reaction from audiences, who gave it an “A” CinemaScore on an A+ to F scale.