Well alright, maybe even I have to admit when it's time to throw in the towel. It seems pretty unlikely that Mega Man is appearing in Marvel vs. Capcom 3's roster, and in an interview with Spong, Ryota Niitsuma discusses why Zero made a more viable choice than Mega Man:
I assume you’re talking about the original Mega Man. There was a Mega Man slot for this game - we had room for a character from that series. But when it came to the propriety of that character being in a fighting game, Mega Man has some problems.
If we were to adapt the original Mega Man character into a fighting game he would have to have a lot more extra moves and abilities, and that would then create a different Mega Man entirely. You couldn’t retain his original character as he is. So we looked into other Mega Mans, and decided that Zero had the best list of moves already in existence when it comes to fitting into a fighting game.
Really? You think it'd be too hard giving Mega Man a lot of moves? I feel like I've seen something like that before. But, c'est la vie. It's not like we got nothing Mega Man related.
News Credit: Steven Chase (via Event Hubs)