I think it's worth mentioning that had this game released on its release date prior to this delay, it would have released on the same day as Battlefield Hardline, Final Fantasy Type-0 HD, Resident Evil: Revelations 2, and Bladestorm: Nightmare. Even if the audiences are vastly different, it's significantly harder for your game to get attention when there are big games competing for attention on the same release week. This is why November is the death month, you a select number of large games slated for certain weeks. If you have a smaller game trying to squeeze into a week crowded with multiple big names, most likely it will be ignored.
After briefly checking the schedule for the week of its new release date (April 2nd), Slightly Mad Studios will share the same space as Story of Seasons (3DS), MLB 15: The Show (PS4/PS3), Dead or Alive 5: Last Round (PC), and Toukiden: Kiwami (PS4/PSV). Regardless of the reason, I think this was a necessary move for Project Cars.
Since it will be a slow week, the game has a chance be the first priority review of that week. Why? Being the only PC/PS4/XB1 multiplat that week helps. Compare that to March 17th, where it would have been prioritized behind at least 3 established IPs. I have confidence in Slightly Mad Studios and foresee Project Cars to be a good racing game, reviews from major gaming outlets during a slow week can only help their cause.








