User blog comment:Xilinoc/Ch. 683 - The Dark Side of Two World Ends/@comment-25359524-20160721233111/@comment-24063296-20160727043656

There's the point that Aizen wasn't as powerful when he confronted everyone in the Fake Karakura Town as he is now. It was established that even after being sealed, he still became more and more powerful. When he had Wonderweiss fight Yama-jii, he hadn't evolved into a beautiful butterfly. He realized he may not evolve to be able to fight him and had a plan in place to counter him. Or maybe he underestimated himself at the time. If you think about from a point of a non-disgruntled fan, there are explanations that make sense without it being inconsistent with the plot. Now, I'm not saying it hasn't been inconsistent, I'm saying maybe you're not thinking about it rationally. Or maybe you're right and Kubo doesn't care anymore. Me personally, I like the idea that from the moment they met, Aizen had Yhwach under his hypnosis. Yhwach may have underestimated the strength of Aizen's power and the Almighty is being distorted by Kyoka Suigestu. The only word we have on Yhwach's power level is his word. He can very easily be lying. It's not something new in writing or even this story. Aizen himself very easily manipulated everyone multiple times to the point where people believed he could predict the future. It could be a very similar thing here. He overplays his abilities to crush his enemy's morale and while he obviously has a LOT of power to back it up, it may noy be as absolute as he claims, which is what a couple of people here are trying to say. It's not that his power is unbeatable when the plot demands it, it's that he has everyone convinced he can change the future so they psychologically hold back when they fight him and that's what's biting them in the ass. Or maybe I'm giving Kubo too much credit.