Marketing would sort all that though. Not saying it'll happen but it's a possibility. Even for Sony.
Would Planetside even work on console? Also, does anyone outside of the PC space actually give a shit about Planetside?
Edit: Sorry, that came out sounding a bit dismissive. I don't mean to shit on Planetside's parade, but I think you'd be hard pushed to find a console gamer who's even heard of it. I can't imagine it drawing much of an audience outside of the people who would already be buying it for PC.