Board Thread:Questions and Answers/@comment-4310945-20140425001334/@comment-27192927-20160105091904

Yhwach over Aizen (with his powers)

1- Yhwach already absorbed & is the son of the SOUL KING, Aizen wasn't enough of a threat for the royal guard to intervene.. and even before yhwach did absorb the soul king, he was able to beat the royal guard and fend off Ichigo & pals (though uryu did help)

2- Looking at their respective armies. this doesnt prove the winner, but it the more powerful army would have the more powerful leader! The arrancars and even the strongest of the espada were beaten by the Gotei 13 captain/lieutenants.. Then those same captain level soul reapers were completely decimated by the sternritter in the 1st assault, and it has taken every bit of power in each fight in the 2nd assault for the soul reapers to fight back against the sternritter. not to mention the quincy conquered waco muendo without even really trying.

3- Yhwach can reclaim all quincy power... Aizen could create arrancar but he could not retake their power back. Yhwach has been only using the amount of power needed to accomplish his goals. imagine if he chose to absorb the shutzstaffel and remaining sternritter plus uryu and the remaining quincy in the wandenreich. plus we dont even know the extent of his power after absorbing the soul king

4- Aizen at his very best was still beaten by Ichigo's mugetsu, and it wasnt even the full extent of his soul reaper powers as we have learned in the blood war arc. Even after ichigo attained his true powers (soul reaper + quincy + hollow) he couldnt compete against Yhwach or even uryu for that matter

I think aizen could make an interesting and hardfought battle, but Yhwach just has to many different abilities and untapped potential power..