@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.
From the artistic mind behind Journey and Flower, ABZU is a beautiful underwater adventure that evokes the dream of diving. Immerse yourself in a vibrant ocean world full of mystery and bursting with color and life. Perform fluid acrobatics as the Diver, using graceful swimming controls.
Discover hundreds of unique species based on real creatures and form a powerful connection with the abundant sea life. Interact with schools of thousands of fish that procedurally respond to you, each other, and predators. Linger in epic seascapes and explore aquatic ecosystems modeled with unprecedented detail. Descend into the heart of the ocean where ancient secrets lie forgotten. But beware, dangers lurk in the depths...