Immature plants grow symmetrically. Mature plants asymmetrical. So if a clone is taken after maturity like it should be it will grow asymmetrical too.
The branch looks fine. Different strains and phenotypes grow differently. And its usually potassium uptake problem if a plant is really stretching too much. It can be unseen except for excessive stretch. Many times you hear that the biggest best plant now has burned edges. That would be the K deficiency showing.