You know what? I've just been thinking.
Since Terminator Salvation happens to this Earth right?
And so does the Heroes saga.
So if both of them take place in the same planet, and since Judgment day occurs 2004, so the Heroes characters would be alive right?
So what? Micah controls machines! I mean that pretty much trumps John Connor. He can COMMAND Skynet. Of course, he's not invincible. So assuming he was killed on Judgment day, what about Claire? She heals, and she most certainly is indestructible. And her blood's like an elixir of life as well. Plus Hiro might've survived. Then teleported back in time and went "Save Rebel, save the world?"
I'd say the odds are pretty much stacked against Skynet.
But I can hear you arguing that the Heroes saga takes place in 2006, thereby establishing that both franchises take place in alternate universes! So they cannot have happened together because Heroes would be a flaming pile of rubble!
But then the theory of Quantum cosmology states that Anything that can happen will happen in an equal and parallel universe! So somewhere Skynet has lost to John Connor, and somewhere else Micah Sanders survives and manages to defeat Skynet too?
Someone ought to write a fanfiction about this.

Da_movie_kid was shot at 9:14 PM