Interesting you brought up Wonderboy. That brought me to a parallel: Big Rigg vs Wonderboy.
At that time, Big Rigg was a wrestling machine, and in most people's minds just came off beating GSP and Robbie two times. The Wonderboy fight happened when Big Rigg was still viewed as the best welter, and not even GSP or Robbie could stop him when he wanted to wrestle. Wonderboy went in there and absolutely smoked him, because there is no way that you can prepare for that spacing and the looks he gives you. Johnny just seemed totally bewildered by what was going on, just like all the guys that taste Conor's left for the first time, like "how tf did you hit me from that position?".