During E3, Joystiq had a few words with Marvel vs Capcom 3 producer Ryota Niitsuma about the upcoming game and the Vs. series in general, leading to a few probes about why the Wii was left out. According to Niitsuma, Capcom just wants to spread the fight love.
Well, [after Tatsunoko vs. Capcom], we felt now it's time to do a Vs game on Xbox 360 and PS3. It was just a matter of deciding we wanted to work with those consoles. There's no mindset, personally, within Capcom where we want to go out of our way to avoid Wii or do it only on Wii this time. It's just the flow of development.
That doesn't necessarily mean that the Wii will be entirely left out of the loop in the future, he said, but it's not their focus at the time.
Well, we can't get into any specifics, but all I can is that the game we made right now, as it is, it's for Xbox 360 and PS3. We want to see how it does and maybe see where we'll take it from there.
Considering the license and Capcom's fighting game pedigree, MvC3 will in all likelihood do quite well. The game is still a year off, and any potential announcement of a Wii version would most likely not be until well after that, if at all.
Marvel Vs. Capcom 3 doesn't use the same engine as Tatsunoko did, instead built on the company's made-for-multiplatform MT Framework engine. In October 2009 it was reported by Japanese newspaper Nikkei Industrial that Capcom had plans to bring the engine over to Wii, but no new developments have surfaced from it yet.