All I can think of is how easy it would've been to make an entertaining sequel to Cloverfield and how they came to think this was the way to do it.
Of all the different possibilities, even with the idea of a giant particle accelerator space station opening up a dimensional rift, they go with this. Some half-assed attempt at weird and creepy stuff connected to Cloverfield with none of it coming together for an actual story.
I had a thought about half-way through, about when they said the line about two dimensions fighting to exist, that another earth where giant monsters evolved would come into play. That they'd get there in a desperate bid to survive, realize it's nothing like their earth, and boom- monsters.
You end the movie with them running for their lives from something we don't see, then bumping into humans from their earth. As they realize monsters from this monster earth were now probably there.... boom, they turn around and we see a shot of the Cloverfield monster roaring. Fade to black.
They could've done all the space station and dimensional stuff only changed that aspect, and I would've got high on that shit.