Strength is, to a large degree, a skill.
When we train to be stronger, we are training not just a muscle to
be bigger, but we are training out brain and muscles to be more effective.
This study from 1981 is a testament to this:
18 sets x 1RM in bench press, 5 days a week
After 9 weeks results in 42 lbs increase in max bench press.
So, be strong, be skillful.