Matthew Berger said that part of the reason why comes down to the PlayStation Vita’s screen being too small to effectively allow players to view the action and manage their inventories.
“The Vita is an amazing piece of kit, but the screen is still smaller,” he said. “And when you look at–and also it has its own aspect ratio–and when you look at Diablo III, there’s a lot happening on-screen already. You get surrounded by your enemies, lots of effects flying off in every direction. The inventory can be pretty complicated to navigate sometimes when you have lots of items.”