Regarding licensing, the Marvel game licenses are kinda like the Mongols. It really depends on what is going to happen in terms of Marvel-related games.
I'm not even entirely sure if, for instance, the Spider-Man license would be fully occupied by the people who make the Spider-Man movie game. Wouldn't that mean they have the license for the game to the movie, not for the entire universe?
Aside from that, there have been things that simply crossed up. For instance, while Capcom was doing MvC3 and UMvC3 (came out in November), there have been other Marvel games released, such as Edge of Time (came out in October), or the Super Squad-related games. So I doubt that Capcom was actually occupying the license for their release.
I mean, why would Marvel pass the license out only one at a time, if the games are vastly different from each other? Or even pass the license out one at a time generally - they can do whatever they want with their products, after all.
And, additionally to that, it's obvious they released UMvC3 last year in order to make room for SFxT.