SeeD Is there even a comparison? MyBB has been in development for YEARS. Flarum is barely 1 year and still in beta. As of now, MyBB is better. Not too sure if that will hold in the future though.
luceos This discussion is one of taste. Also Flarum is still in beta, so if you are asking this question in order to make a decision what to use, you might need to rethink your options all together and probably read my previous comment on this matter.