Outdoors there may be only a negligable difference. However faced with the lighting constraints indoors, this method keeps the growing canopy at the same height (within the sweet spot of whatever lighting that you are using).
If the plant just grew without intervention there would be one flowering cola 1' from the light with smaller colas further and further away from the light, till if the plant grew to 4' the lower buds and branches would be fluffy and spindly instead of tight and dense. Finally if the plant grew any taller the light would be completely ineffective and the plant would begin to yellow in those nether regions.
Once again there will be no more branches than without the bend only faster growth to create a sea of green colas.
Get it?
Are you growiing anything cannaking?