King Daniel Into Darkness wrote:
One photon torpedo set to high yield should have been enough to raze all of San Francisco and render it uninhabitable for centuries (antimatter = FAR more destructive than a nuclear blast). Why didn't the Breen do that? No good reason.
But photon torpedos are never portrayed as that powerful. All the detonations we see seem puny and conventional.
The only instance where it's kinda up in the air is Balance of Terror, their original use where the spread pattern covered huge chunks of space to rattle the Romulans a bit.