The publishing thing -does- complicate matters a bit, but in the end, it all just depends on what's in the contract. Mass Effect 1 was published by Microsoft, after all. With it being Capcom, I don't think they'll have locked themselves into five years of exclusivity, and/or there's a clause that lets them "Dead Rising 3 Sigma" it.
Apparently the Mass Effect work-around was they couldn't release "Mass Effect" on PS3, but they could release "The Mass Effect Trilogy." Semantics, baby!