That's why I wrote Adem's and Danny's concerns as pure speculations since they really don't know, and Sam can't confirm it one way or another. It lends some dramatic tension in the story. I can't be blamed if Pro (as usual) misreads what I (and Gooz) wrote and assumes the speculations to be fact...

The analogy with Army of Darkness only works so far, though, since that took place in Earth's past, while this will take place in another universe entirely which, for all we know, could have different laws of physics governing it. Sort of like in the JLA-Avengers miniseries except divided on more scientific/magical lines.

Personally, I'm partial to the idea that it's very similar to the HR universe, except while the HR universe is predominantly scientific with some magic here and there, the Darkworld universe is predominantly magical with some science here and there. But that's just MY speculation. Don't take my word for it.