"Bayonetta is a brand that we want to see become stronger, reaching the hands of more and more gamers..."
Platinum CEO Tatsuya Minami.
If that is truly the case, why bring the game to a system that isn't even out yet, doesn't have a built in fanbase, and won't be able to reach as many people as you would if you released it on the systems that the first title was on? Answer me that Platinum.
And it helps out both companies. As I saw written by others, Nintendo picked up after it was dropped. Not only that but because they're releasing it on their new and upcoming system that people are iffy about, it started to bring a crowd in. It's tries to get this big AAA titles to help out the sales of the Wii U and try to get back the third-party support that it had lost from the Wii. (Most of the games for the Wii were copies of each other and didn't really expand from the same controls of gameplays.) The Wii U is practically sold out everywhere and it isn't even on sale yet, and you're lucky if you can find a place where you can reserve it without having to resort to a 3rd party seller who is up charging it because he was able to reserve one.
@Snail There is, it's in the fighting part when you get to pick between Tails and Eggman. Super Giant Robots fighting and what not. Chao and Dark Chao fight in like giant robot versions of themselves. I only got to play up to Green Forest of the Hero Side since I had to go to school. The menu looked the same I briefly looked at 2P screen. There's a Downloadable Content menu which of course wasn't there before. I don't have the DLC so I'm assuming I'm playing it as if it was on the Dreamcast.
@Snail Well when Sonic Adventure 2 was just released certain characters had to be unlocked as well as some (Chaos for example) had the same stats as one of the main character (In this case Rouge).
In Sonic Adventure 2 Battle, Chaos was given his own stats, Metal Sonic had his abilities removed and was just given a shield seeing as how fast he could race down a course, you were given the ability to alter match settings (in Sonic Adventure 2 you had to play 3 stages in a row), each character had their own special abilities, replaced Big with Dark Chao, and added more stages to the multiplayer.
Edit: Or wait did you mean from the DC/NGC version to the PS3/Xbox one? I just listed how it was changed from SA2 to SA2B.