It would need four or less disks but heavily compressed.

The fact is that if it was a multiplat it was going to be a very different game just to squeez everything into the DVDs, sound graphics, cutscenes, AI codes etc whould be substantially diminished.

I am one of the lucky dudes to play MGS4 at Eforall expo. MGS4 was performing at 1080p in a Samsung HD TV. The graphics were just to amazing, Konami also provided users with surround sound headphones by Sony. The controls for MGS4 were user friendly. It took me about 5 min go get the hang of it. Though i didn't get to experience the first person shooter view. MGS4 is definitely showed most of the PS3's real power. I also got to meet Ryan Payton, he showed us the controlling layout for MGS4 before playing the game. After 20 minutes of playing the demo, Konami had us fill out a survey on how we thought MGS4 was, giving us options to write down what improvements does the game needs. I personally marked down everything good as is but except for one, I had found a glitch between the interaction of the environment and the NPC's, some of the soldiers would get stuck behind a wall for a couple of seconds while sanke would be hiding behind it; yet it is just a demo so I'm sure this will be fixed before the U.S version demo comes out on the PSN. Over all i had fun playing MGS4 at eforall and best of all, playing it more than 4 times. LOL yup I made 2hr lines over and over again.