Meh, Nintendo seems quite stingy with their copyrights nowadays, especially with Nintendo being the "family friendly" company. And considering how Capcom and the Wii are doing, I wouldn't count on it. Darkside Chronicles was an excellent game that blew chunks at sales. Dead Rising was a previously excellent game that blew chunks on the Wii. I think the only real high point for both sides was RE4, but even then that was a port of an already amazing game that was only like $20, brand new.
Nintendo wouldn't lend out their roster of characters for fighting games outside of Smash Bros. That's pretty definitive.
Still, I can see a T vs. C 2 coming around. Speed Racer and Resident Evil characters?