Quasar & Sentinel Alan Scott & Beta Ray Bill VS. Ego The Living Planet

All of their heroes are at their peak. Ego is at 85% percent power. The heroes have a day of prep. They are ambushing the living planet.

Debate.

Mr.Terrific theorized that Alen Scotts death would result in an explosion that would destroy the solar system

Give that kind of power and the back-up of 2 Superman tier superbeings id say they can do it