I'm guess without topping the side branches wouldn't have reached the top to create a canopy. The plant would have looked more like a conifer(Christmas tree).
@420_liquidsun, my plants that are supposed to be totally different seem to have adapted partially to the pheno typical display of the most dominant plant to a degree. This is 4 in a 2x2 close together mind you
I've seen a couple people grow this strain by them now. They make some pretty top notch genetics so you should be excited with how she will turn out. I wish you the best of lucky growing her. Cheers :D