That's true. They did have a build already made, but when you look at the KojiPro demo to the final build, they play like completely different games. The original seemed more narrow in a sense, while Platinum went over the top, which worked better IMO. I still remember when it was being billed as prequel to MGS4, which makes absolutely no logical sense when that particular Raiden was way more overpowered than what you see in MGS4.