Pac has clearly improved However, I think the improvement is more down to Pac being allowed to fill into a more natural weight. He's coming into these fights with an optimum level of strength and is therefore able to apply himself better. There is less of the boiling down which probably sapped him somewhat towards the end of his spell at the lower weights. Pac is a natural JWW now and I doubt he could make 135 again without looking like a corpse.