User blog comment:Lia Schiffer/393: The Burnout Inferno/@comment-1243139-20100225201854

I was never really sure about the difference in strength between Yamamoto and Aizen but I must have failed to realized Yama's experience. So if aizen made an arrancar specifically to counter ryuujin jakka and so now that he knows what's going on he may resort to other tactics, there's still Hakudo, kido and once again millenniums worth of battle experience.

Although alot of people are still mentioning Urahara, who is not capable of beating either aizen or wonderweiss is still a scientist who helped make that barrier meaning that he must still be working behind the scenes in-order to counter something important namely that extinguishing ability. However the one person who I would be interested in seeing join the battle would be Kurosaki Isshin.