Would Erik Morales be successful if he'll go up to his comfortable wt. 140 lb division and revitalize himself

He seemed to be having hard time making 130 lb wt. Even if he made it the last time losing 10lbs or so in just a month, it seemed to affect his endurance, stamina, and even his punching power. Is it time to renew himself and move to higher wt. cl? After all, the only man to beat him undistputably is Manny Paquiao, the heaviest bomber at 130 lb. division. Would it have been JMM or MAB it would have been a different fight. What do you think so?