My Pitch Perfect prediction is because North American box office seems to mirror the Aussie box office and Pitch Perfect 2 had a huge opening in Australia this past weekend, the first film also did fantastically on home video and Hot Pursuit just flopped so it won't be stealing any of that female audience away.
My Mad Max prediction is based on the amazing trailers and good reviews.
And I already explained why I thought AOU was dropping over 50% so no need to go over that again. I will bow down to Docker if the film hits 43 million.