Fear of Hardship

What was the most important difference between the First Chronicle and Third Chronicle creature? Maybe in strength? In speed? In the amount of energy? In combat skills or instincts?

Yeah, those were all valid answers, but it wasn't a pure indicator of power. It just meant that more First Chronicle creatures were needed to defeat Third Chronicle. 

If Third Chronicle was ten times stronger than First Chronicle, then a hundred First Chronicle fighters should have easily defeated a single Third Chronicle. However, it didn't work that way, the rules of this world worked differently because there was a significant difference between their auras.

A Third Chronicle creature didn't even need to fight a First Chronicle one to win, it didn't even need to make a single move since the aura was enough. With its aura, Third Chronicle one could suppress its enemy without letting it even move, completely disarming it.