Freak the mighty and the mighty have many similarities like how there are all the same characters and max doesn't go to the funeral. Max and freak were both bullied. Also max dose ends up writing the book.
In the movie and in the book freak and max return the purse and freak rides on his souders. Freak also choked on the american chop suey. They also went to the hospital.
Also the movie and the novel have some differences too. Like in the book Loreta was broke, but in the movie