Froggy Intelligence.

A domain the size of 10 trillion square kilometers, capable of suppressing 1 million Origin gods, including Supreme Origin gods. Meanwhile, Legion-5 can barely freeze a single Supreme Origin god with his cosmic domain. He would even fail to do so if he didn't have the assistance of the world fragment. 

It is a sobering thought that has made them understand the gap between a world god and an Origin god even further. It has also made them appreciate the realm lord's achievement of defeating a world god. 

The realm lord was able to overcome this difference with the aid of a billion world fragments built with trillions of top grade artifacts and powered by a billion units of Authority. They don't have either of the two, so they are unlikely to be able to achieve such a feat.