I'd fight Cain right now for free.
Worst thing that happens? I get KOed brutally. I ran much higher risks when I was 17 getting in fights outisde of nightclubs.
At the end of it, you're that average dude who just faught the world HW champion. That's ******* awesome. Not only will you get paid like **** doing promotional shit, but screw it. You have a 0.000000000000000000000000001% chance of winning. That's better than 0%. Getting knocked out isn't the worst thing in the world. Getting your ass kicked isn't either.
And don't get me wrong. I might do a little bit or martial arts but I'm in no way in shape / able to fight trained fighters. But **** it, would be worth it if anything to walk out infront of all of those people cheering for you in the main event of a UFC PPV.
I'm calling you out Cain. After you beat Tyson Fury I'm taking that belt!
Cyborg Vs an average dude at the same weight? That's actually hard as **** to call. If they can throw a decent punch and land it, sure she's going to be in trouble. But her conditioning, plus her technique and overwhelming style, you might not even get the chance to throw one off.
At just over the LHW limit though, unless we get a HW Cyborg, no female fighter would scare me (although, I could get some period blood on me. Ewww)