Originally Posted by brangdon:
“Well, they call it Earth-1, but that was because it was the Earth they came from. When they met someone from Earth-2, he made a point of telling them that to him, his Earth was Earth-1 and theirs was Earth-2.”
True. But...
Originally Posted by brangdon:
“It was only in the finale that they said there was a way to destroy all the Earths, and apparently that could only be done from the Flash's Earth. Which suggests that the Flash's Earth was special and maybe deserves to be Earth-1 objectively.”
... it wasn't just suggested that Flash's Earth was special. It was specifically stated in dialogue.
And, of course, looking at it from the real world rather than in-universe, The Flash & Arrow's Earth came first, as Arrow was the first TV series > It's Earth-1.
Originally Posted by kriZbii:
“There is no JLA in the TV universe (yet). Comic, film and other TV adaptations have no relevance here. As things stand, Supergirl exists in a different continuity to The Flash, the writers just used The Flash's multiverse to allow them to cross-over.
Arrow, Flash and Legends of Tomorrow are all set on what the Flash calls Earth 1.
Earths 2 and 3 are alternate versions of Earth 1 featured in The Flash, but you don't need to know that unless you watch The Flash.
Supergirl is set on an alternate version of Earth, where she and Superman are the only known superheroes.
People like Batman haven't been mentioned to exist in either TV show universe.
The DC Movies exist in their own bubble unconnected to the TV shows, where Superman, Batman, Wonder Woman and The Flash and probably every other DC hero exists.
The finale of The Flash could lead to the TV universes merging so that Supergirl ends up on Earth-1 with everyone else.”
Exactly.
It doesn't matter how things are, or how things were done, in the comics - this is
separate, as are the other TV shows.