@SupaPhly part of the reason could be that they are more responsive to FOREX fluctuations than MS or Valve. The other reason is that we are so small for Sony that they can't be bothered to match what happens on the other platforms.
If you have both consoles it allows you to price shop, i've picked up a few games this way.
Prepare yourself for extreme air and jaw-dropping showmanship in this nitro-charged, ATV racing experience! Travel the world visiting tracks in the USA, Thailand, England, Russia, Canada, and Mexico. Speed around 24 challenging courses hitting epic jumps and earning "Nitro" by unleashing dozens of wild tricks! Compete against a friend in any unlocked event!