Take a look at this moment I spotted in Sakurai's match:
http://www.yourepeat.com/watch/?v=rqxDPJmO6f8&start_at=271&end_at=273
Megaman and Mario seem to match Fairs in the air. Neither character is harmed. Mario pulls back. I can't tell if Mario somehow airdodges out of his fair, or the two attacks clanked. However, this indicates some dramatically different mechanic in place for it to happen.
http://www.yourepeat.com/watch/?v=rqxDPJmO6f8&start_at=271&end_at=273
Megaman and Mario seem to match Fairs in the air. Neither character is harmed. Mario pulls back. I can't tell if Mario somehow airdodges out of his fair, or the two attacks clanked. However, this indicates some dramatically different mechanic in place for it to happen.