I really don't think it's far fetched to think that Metal Gear is indeed coming to the 360. As someone earlier stated HD gaming does not have the massive install base that they would have liked, so it makes common business sense to have an IP increase its market share by going multi-platform. Of course "common business sense" is not always in tune with "common fanboy sense."
In the end its all about the green. Money that is.
In the end its all about the green. Money that is.