At what weight can Pac fight and be at the peak of his skills, speed and strength (relative to his opponents), at 140lbs or 147lbs?
140 no doubt. Heck he may even be able to do 135 still and I think at that weight no fighter right now comes close.
140... he will be at his best form relative to the standard physique of the majority of his opponents. physically: 140 - He is at the top end of the division 147- lower end of the division
Pac hasn't been below 140 ringweight since the Morales 1! He outweighed Oscar in their fight! 147 is Pac's fighting weight plain and simple