Also not to mention it just wouldn't make sense from even a developmental standpoint for them to go multi-plat. Reach will be the third game designed by them for the 360. Obviously they have the hardware figured out pretty good which thus decreases costs for developing the game and also alows for them to make games faster, better, cheaper, with bigger profits. Why would they in the middle of this gen switch over to PS3, have to higher an entire new team of people to figure out the PS3's very different architecture, and risk all that time and money on a platform that their games are never on? It just doesn't make fiscal sense. Like I said I think things like this are more of a bluff to pressure MS for cash.
The exact same could be said about Insomniac going multi-plat. Just doesn't make sense at this point.