There are games much much larger that Destiny you can play with PS3. You can believe whatever you want to but they intent to launch this game for ps3, not ps4. ps4 released before they release this game one year ago and they just port it to ps4. this game's code build for ps3, and any sane gaming company will develop their product to work smoothly for intended platform. I can't say roi is much bigger, because we have mars from day 1 which works perfectly fine with PS3. Believe me, i do want an open world mmofps game like Destiny and i hope Destiny 2 will be it, but last three years with Bungie made me think they probably lying again.