Uhm, what's up with the Nintendo fans coming in here praising Miyamoto just because the OP said Kojima is the greatest developer. It's the guys opinion, and it wasn't even the main point of the article. I mean really, can't you hear someone other than Nintendo praised without without having to be like, "Well I diasagree, Miyamoto (Nintendo) is so much better." Don't get me wrong, I like Miyamoto and a lot of his games. But he didn't invent gaming or platforming, he just added his own twist and improved upon previous ideas. I just don't feel those posts have any point in this thread, as it's not a "Who do you think is the greatest developer?" thread.
@OP: I really don't think Kojima left PS3. Actually, if my memory serves me correctly, Kojima hasn't developed for any other console besides PS consoles (excluding previous gen's without PS's, of course.) I believe he has always developered for PS's, while his games are ported to other systems, without his direct involvement. Either way, I am looking forward to whatever he brings us next. Maybe a FPS, or another ZOE installment.