[quote name='MPoWeRM3']Again, the IP is still Platinum Games and if some day, Sega says, yeah, we want to have a Bayonetta 2 on XBox/Playstion systems, Platinum Games will make it and Nintendo can't do anything to stop them. I understand you argument, but since it does exist now, if Sega gives the nod, it can come out to other systems.[/QUOTE]
I'm sorry and as much as I wish you were right, you are not. I won't say we'll never seen Bayonetta 2 on other consoles as we don't know what kind of contract they have with Platinum, but it's likely it will remain a Nintendo exclusive. Nintendo not only funded this game, but they are also publishing it.
You can go do the research yourself, no 3rd party title published solely by Nintendo (there's games that have been published by Nintendo in only certain regions that have gone multiplatform, but worldwide published Nintendo 3rd party titles never have) has ever gone on a non-Nintendo console so far. At least concerning Gamecube, Wii, Wii-U, etc.
Bayonetta 2 is being published worldwide by Nintendo, no one else. Nintendo doesn't let go of anything they fully publish. Platinum Games is developing Bayonetta 2, Platinum Games owns the Bayonetta IP. But they do not own Bayonetta 2 anymore, Nintendo does. For all we know maybe PG did reach a contract deal with Nintendo to one day let it release elsewhere, but going on the current history we can only guess that it never will.
Sometimes it doesn't even take Nintendo to publish the title for them to keep an iron-grip on it. Take for example Resident Evil REmake and Resident Evil 0. Those were entirely developed and published by Capcom, one of the greediest video game publishers alive today... still Gamecube and Wii (port) exclusives even tho one of them (REmake) is considered one of their greatest games ever made. It all comes down to the contracts signed.