Board Thread:General Discussion/@comment-1504072-20130423225415/@comment-1210805-20130424061746

It's simple. The collection is PS3 exclusive because MGS4 is only on PS4. They put it together using every game available on PS3. Porting PO would have taken far more work, just as making MGS1 available on 360 would take more work. It's a collection made up of things already released with 0 updates or changes. It doesn't discount PO or Rising, it's all down to business.