Not sure what I need to purchase?

[Req]

If you already have a legacy account then I am pretty sure you will only need 1 ps3 copy. I am not sure why everyone is telling you to buy a second copy if you already have an account with a registered code. There might be something I don't know though, but I do know in FFXI I played the account I made with a PC version on the ps2 for about 5 years. I was under the impression you only needed the ps3 disc to actually install the game if you already have a registered legacy account.

Then again, it is worded kind of ambiguously, and doesn't mention anything about people that have a pc account.