I know the White engine is being used for the MMO from S-E... but it was developed that way from the beginning, it's not the same thing... developing a multiplatform game is different from an exclusive game and is handled totally differently. Drastic changes would have to be made to the current XIII project and development to include a 360 version. The first thing to go would be S-E's comment about taking full advantage of the PS3 specs and since that it was VERY recently stated that they want to use everything the PS3 has to offer, that doesn't look to be happening.
And for the MGS4 comments from Sony, Kojima and Payton. They are different links but commonly known. You can find them yourself, I don't need to convince you since your mind on the matter is made up.







