Meh even if it does happen we all know 360 million sellers are at a way higher total number then PS3s.
We dont know XBLA vs PSN total numbers, but its common sense that 360 gamers love XBLA way more then PS3 gamers love PSN.I mean, Minecraft is a year old multiplat port and it broke 5 million in 2012. Journey hasn't even breached 1 million (no PR announcement).