@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.
Injustice 2 is the super-powered sequel to the hit game Injustice: Gods Among Us that allows players to build and power up the ultimate version of their favorite DC characters. Featuring a massive selection of DC Super Heroes and Super-Villains, players can personalize iconic DC characters with untique and powerful gear earned throughout the game.
Additionally, for the first time, gamers can take control of how their characters look, fight and develop across a variety of game modes. Injustice 2 expands on the previous title’s larger-than-life showdowns. With every match, players earn gear to equip, customize and level-up their favorite DC Super Heroes and Super-Villains that meaningfully impacts not only how they look, but also how they fight.