The fire in question swept through Paradise in less than an hour, and at points was moving a football field a minute. A figure of speech was used for emphasis.
That was hell on earth.
Post-Katrina was hell on earth.
9/11 was hell on earth.
Las Vegas was hell on earth.
Hell becomes a synonym for everything that is 'hellish', even horrible freeway pileups.
Mundane things like rush hour can also qualify. But that is a whole language etymology thing.
#Strong hashtag are the representation of heaven, though not explicitly said. Aftermath togetherness, hope, and all things that counter-balance 'hell', even trendy twitterverse reactions, are defacto heaven.
It can also be things that are pleasurable.
"This double chocolate cherry cheescake is fucking heavenly."
But quite simply: Hell leads off the news and heaven is the fluffy heartstring shit at the end.
There be duality to reinforce, you know.