User blog comment:Xilinoc/Ch. 683 - The Dark Side of Two World Ends/@comment-4080775-20160727005940/@comment-5398287-20160728034303

Did you ever consider that maybe, juuuuuust maybe, the sheer power of The Almighty can be countered or worked around by similarly OP abilities? Because that happened not two weeks ago with Tsukishima and Book of the End in a way that made sense, and Aizen's known for being able to make incredibly powerful illusions, to the point that his Zanpakuto ability was called Absolute Hypnosis. Up until this point in the story, Yhwach's never had to face illusory powers with The Almighty, so for all we know that is his weakness.