Original sentence: One of the reasons is because of some of it's differences between this movie and the original.The Butterfly Effect 2 was met with poor reviews.There isn't much of a given reason why Nick can timetravel, and when he does, unlike Butterfly Effect 1, he only goes back a couple of years
Edited sentence: And when he does, unlike Butterfly Effect 1, he only goes back a couple of years.Critics stated that this movie was horrible and had no reason to exist.There isn't much of a given reason why Nick can timetravel