Why Is Tom Cruise So Hard to Find in the Rock of Ages Ads?

Why is Tom Cruise's face obscured on the ads for Rock of Ages, instead of his image and name being front and center? I saw a commercial for the movie and he was barely in it. What...

Source: http://feeds.eonline.com/~r/eonline/answer/~3/YBNdJItMoek/319782

Satou Haruki Hamasaki Rio hoshino yoshii Misaki Akari