so Quantic Dream announced on their facebook page that Heavy Rain has sold 4.5 million on PS3 and PS4. this is 1.5 million more units sold since august 2013 when they announced 3 million units sold and generating over 100$ million in revenue.
Guess Sony was right to bet on the game and take a risk. payed off greatly for them.
https://www.facebook.com/418304094916501/posts/1412394988840735/