Yale was quite skeptical when he heard his grandfather saying that he would never lose in a battle of pure ability in which strength didn't matter.
"Eh, why do you doubt about my battle prowess? I turned famous due to it, and even the creator of this universe acknowledges my prowess in battle."
The lack of trust of Yale hurt the Battle God, but he decided to calm down and continued to explain.
"Do you know that I once battled against the creator of your universe in a battle of pure ability and it ended in a tie because neither of us was able to win after a whole year? I admit that if he uses his power, I would have a difficult time, but that is because of our difference in level. Moreover, that battle was soon after the creation of the universe, so I was weaker than my current self, and I bet that in your time in the real world, I am even better."