In the world of weight training, strength and muscle gains go hand and hand. Whether you are a power lifter or a bodybuilder, you are going to want to build strength to see results. The more weight you are able to lift with precise form, the more muscle mass you will put on. It's simply a matter of science.
Being an Alpha requires having an Arnold-esque back to carry the team.
And since the back is the second largest group in the body (after the legs) consisting of a bunch of different muscles which all need to be isolated for complete development. Similar to the chest strategy, there are many different movements, grips and angles used to target each muscle of the back.