It had nothing to do with both of them. They could have shown any random monster at the end of the movie. Clover from the first movie was barely bigger than a building and now he is suddenly taller than the sky?
it's not the same Earth, yo
Cloverfield took place in 2008 in one dimension. This new film I didn't see what the year is, but it seems to be further in the future. Wouldn't it stand to reason that the alien/monster/whatever could be much larger in this future dimension?
I will agree they made it ridiculously huge, but we don't know how high those clouds were either :P
Wait.. but they went back to their own earth at the end.
So that earth and the earth from the first Cloverfield are two different earths you think? I assumed they were the same one and the second earth (the one where her kids are still alive) was the only other one wed seen. You think that all the movies have been on a different earth?
It can be any Earth in any timeline now because of the incident at the beginning. Cloverfield is now basically connected to every single movie.