Physique development is not about “How much you lift, but how you lift”. A muscle stretched with resistance will receive the most overload and in body part training, train the muscle NOT the movement. You are not bench pressing or squatting for a record, you are doing it for development. Make sure to get a full range of motion for the muscle you are targeting because the intensity of contraction is dictated by the degree of pre-stretch with resistance.
So Instead of thinking about lifting the weight from point A to point B, focus on flexing the targeted muscle thru its range of motion, the weight in the hands is only added resistance to overload the muscle. The “amount” of weight isn’t as important as the intensity of the contraction. Strength is a by product of training for hypertrophy and vice versa.