That explains why the smallest LPGA players hit their 7 iron the same distance as the bigg PGA guys
Well, you can make fun of it all you want. I've gone down that road for 30 years. It's Alignments and Precision. But I won't stand in anyone's way who wishes to learn that on their own.
Strength doesn't blast the #4 PP from the chest. But if you don't swing on the TSP and use EA with PP #3, then you need all of the strength you can get. And more.
I can blast a 7 iron 190 yards. I can do 10 push-ups. I can't do a single Pull-up. I do 25 sit-ups on my best day.