User blog comment:Zwann/Vasto Lordes in the Espada, let's analyze./@comment-1432572-20091111231102

yes Rejuvenation, both combatants USUALLY get tired when its a hard fight. However, Starrk, Harribel and Barragan weren't. This means the battle wasn't as strenuous on them as it was on the CAPTAINS, so this would mean that they weren't putting in as much effort as the Captains whichi would in turn mean they are/were stronger.