IMHO, many people will cancel their preorders when they play the demo before the game releases.
This is my 2nd most anticipated game for 2010 (only behind GT5). However, if we look to how Fahrenheit performed, I don't expect great success. I haven't seen a single video in order to avoid spoilers, but my faith into this game is so strong that I'm buying Collector Edition day 1 with little to non knowledge about it. Fahrenheit was one of my top 3 games for the last generation, so my expectations are high.
But if we look to the average gamer... it has no online, no freedom for shooting, too much videos... It doesn't look like a good choice. Heavy Rain could end up being only a "must-rent" game, primarly if people realize it's not too long.
Just my 2 cents.
edit: typos ^^
