I can't believe...
...the prosecution wouldn't have sought witnesses to Aaron's character and interviewed other altar boys who could have said that a) Aaron didn't stutter, b) he was a nasty piece of work, not an angel and c) about the paedophile priest's sick predilection.
Surely any number of people would have said the "Roy" Aaron of real life was not the timorous, pathetic, stammering figure in the dock.
I really like the film, especially Edward Norton's acting, but that one bit does bug me.
The restitution of life is no great feat. A variety of deaths may well enter into your punishment