Sorry if this has been answered elsewhere but I was wondering...

I play on a new ps3 right now I have an old fatboy that my bro wants to get the game and play on. That being said would he be able to play his account on my ps3 and mine on his. Thats not really what I'm worried about I ask cause when the PS4 comes out I'm going to get that and let my bro have the newer playstation. So when that happens will he be able to use my new playstation to play his account on.

My old fatboy ps3 still works but who knows how much life it has on it. Its a first gen system.