I think it's because of the game's bad press - it didn't sell very well, because it was a sequel to Driv3r, which wasn't too popular with the reviewers and gamers. Many people would think the series could only go downhill from there, or something...
only played it for a bit and enjoyed the gameplay and setting immensely and I know at least one team member who absolutely loves Parallel Lines. :) It's a matter of preference and giving the game a chance. :)