User blog comment:Oshbosh/The Invasion Of The Daleks/@comment-1683193-20121030072010/@comment-1683193-20121102093608

Still, the minimum energy for a planet buster is around 10 exatons, and the displayed firepower in that episode was around on par with that of the Death Star, which had a main gun which yielded in the tens of thousands of yottatons. Thats superior to basically every sci-fi civilization excepting god races like the Xeelee(who had planet busting handguns).