Granted Michael doesn't have any professional fights (neither did Conor)but word back in the day was that he was undefeated in street fights. I don't think this is as much of a mismatch as one might think. MJ had great footwork and as evidenced in 2003 top notch defense. Who do you think takes it?
This is one of those matchups where I think a post prison Tyson is better than the pre-prison version. He gained the experience on how to protect his asshole.