Look, real life Mike Tyson got his ass kicked by Glass Joe. So, I'm not sure what Jimmy Fallon expected when he put Iron Mike up to fighting himself in the NES classic bearing his name.
How bad was he? Look, this dude fighting Mike Tyson blindfolded lasted longer. Fallon helpfully coaches Iron Mike to hit "A-B-A-B-A-B!!!" to get up, but it's no use, because he doesn't know how to throw anything but body blows. Press up! Up, dammit! Up!!!!!!
The result was inevitable, because Mike Tyson would either kick Mike Tyson's ass in Mike Tyson's Punch-Out!!, or Mike Tyson would get his ass kicked by Mike Tyson in Mike Tyson's Punch-Out!!. So score this a draw.