Julio Cesar Chavez Jr weighs 15 pounds heavier than Zbik, were you surprised?

Zbik only dehydrated to 8 pounds while Chavez Jr dehdyrates to 20 pounds which is the highest in his career. Chavez Jr. weighs 180 on the right and yesterday he was only 160. Do you think Chavez is trying to increase his power by perhaps risking his speed?