From what I understand MS has a policy that multiplatform games can not release on another system prior to the 360 or have exclusive content on another system. There is obviously some discrepancies like AC3 on the PS3 and any titles that get ported on a later date, which might be part of a Sony policy as some have mentioned to include extra content if a game isn't released day and date.
Notice those two policies are not the same, if that is indeed what their policies are. Sure Sony might require extra content, but that is only when the game won't release on the same day as another system already. Microsoft on the other hand requires that the game can't be released on another system first, forcing the publisher to delay or forfeit their release on the 360, which means they would be out of a lot of potential customers.
This MS policy, if true, is not a benefit to the consumer and would prevent a game like Rayman Legends from releasing on the Wii U until it is released on the 360. It might even require that the game include a certain level of asynchronous gameplay in order to release on the 360, but that might be wavered. In fact I wonder how a policy like this has effected 3rd party support on the Wii, though there are obvious other difficulties with multiplats on Wii.
Before the PS3 everyone was nice to me :(












