Capcom & Namco: All you need to know
Apparently, there's an article in Game Informer talking about not only Capcom Vs. Namco, but also a separate title of Namco Vs. Capcom. One would use the SF4 engine, the other would use the Tekken 6 engine. I already made a comment earlier about how I generally hate the Vs. series, but I want to be more unbiased on this specific issue. Fortunately, anything I'm saying here is purely speculation, because this hasn't even been officially announced yet, let alone any real gameplay aspects.