I hate it because income feels like a number that the studios really care about, but what about number of tickets sold? A movie released this year has a huge head start on box office income when compared to a movie from 20 years ago, since ticket prices have easily doubled. Plus, theatres often have different prices for students, children, seniors, matinees, and even IMAX/3D. So wouldn’t it be more apples to apples over time to compare number of tickets sold, rather than total income?