I still don't see MGS4 appearing on the 360 TBH. Even if it were to happen, I reckon it would easily be 12-18 months away. The longer it goes and the closer it gets to MGS4 releasing on the PS3 without any announcement, then the less likely it is to happen.
FFXIII is another one, development of this game is already a good 2 years in and nothing has been mentioned about a 360 version. SE is hoping that a decent number of PS3's sell by the time it is released and it looks like this may very well happen.
EA certainly are pushing more and more 360 games, but EA are just like that....they intentionally follow the large userbase and can very quickly move to another platform over the course of a few months. But they generally don't stick with a platform long enough to get the most out of it, unlike dedicated platform developers. But EA is a huge plus for MS at the moment and Sony will try their hardest to make sure that EA still make PS3 games and don't go down the same road as the Dreamcast.
Prediction (June 12th 2017)
Permanent pricedrop for both PS4 Slim and PS4 Pro in October.
PS4 Slim $249 (October 2017)
PS4 Pro $349 (October 2017)
