But i think the big % of player base are PS3 users due to them not having money to build a pc or don't want to build a pc just for 1 game they like to play.
True. I built a pc for this game at launch, and the graphics card alone was $700. But i still can't quite get this game to max settings. That same series of cards is only just now entering the $200-300 range. Also mind that a lot of people want to play on laptops. A lot of people have computers that are a couple years old.

This game was ****ed for PC even with a 90% metascore just because of the system requirements.
That said, by the time the PS3 version comes out, and word of mouth shows this game to have hit a stride,
more and more people will have a PC or laptop that can run the game.