Yes, APM does mean you can accomplish more, and that does make a difference…once you get out of the metal leagues. Because when you’re in the metal leagues, legitimately, there’s a 100% chance you’re not using that APM properly anyway. I’ve seen people in Silver with 300 APM because they sit there mashing away while floating 2k resources, not getting upgrades, making no workers, and microing around a small army that is doing nothing meaningful. If you’re as experienced as you claim to be, you would understand that at low levels of play you’re far better off developing fundamentals than worrying about your APM; which was my only point.