7th gen yang-
Iam not sure why you address your statements to me specifically, beacuse iam not disagreeing with what you say.
Bodybuilding weight training methods does slow a person down, or maybe I should say are not ideal for power oriented sports. Strength training for sports is a different animal, and information on the subject is certainly not as prolific; with bodybuilding weight training dominating most of the media. In fact some countries use to even keep these things rather secret, because these are the methods used by most competitive sports, ie track and field, gymnastics,...
The pyramid you described, a sort of inverted scheme, is more for bodybuiding (hypertrophy) than increase in strength or power. I mean look at the amount of reps you would do using that method, how many total going up and down the stack? 30, 40, 50,...? Your own results tell you, you are working on hypertrophy
( THE PUMP).
Strength of course increases, becasue with size comes extra strength, but it is not ideal for power development. In fact in hinders you, that is why strectching is so emphasized by everyone here.
And of course genetics plays a very important role, next to the amount of steriods used in competitive sports.