Tatsunoko vs. Capcom's producer, Ryota Niitsuma, had a discussion about the upcoming release of the game outside of Japan with VideoGamer.com. He comments that Capcom would be better off making a sequel for the PlayStation 3 and XBox 360 instead of doing a port. He also added that:
“The other problem is the game is optimized for the Wii system, especially the graphics features, so if we were to port it to PS3 or Xbox 360 we would have to make the game from scratch, and in that case we might as well just make a sequel of the series on those consoles rather than porting it.”
Niitsuma stated that they're waiting to see how the Western audience reacts to the game before they decide what they want to do in the future.
Source: VideoGamer.com.