Kai and Supreme Kai Aren't Planet Busters?

[Aksil]

This from DBS: Beerus Remaster



Why are beings that can one-shot Namek Saga Frieza in awe with planet busting power?



Saiyan Saga Vegeta threatened the earth with his Galic Gun, First Form Frieza destroyed planet Vegeta.



Is it just a typical inconsistenty?

 

[SSJ2]

I don't think it's the ability to destroy planets they are afraid of, it's the unpredictability of a God of Destruction. He could lay waste to the entire universe if he felt like it.