Honestly at this point it almost sounds like they won't be releasing it on the other platforms at all but just don't have the guts to come out and say it.
I doubt that. That would have ramifications way, way beyond what MS greased their wheels with, or even could. If they did that? I suspect a lot of players, especially PC players, would simply quit the series and quite possibly the company. I would.
FO4? Who cares, they won't give DLC. TES VI? I'd love to, but I want DLC and mods, so no buy. etc.